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African Americans; agricultural land; ancestry; case studies; extension agents; farmers; sharecropping; teachers; United States
Abstract:
... The oppressive histories of slavery, sharecropping, and discriminatory lending practices contribute to a modern American agricultural landscape where black farmers are underrepresented. While African Americans once made up 14% of the United States’ farmer population, today they only make up 1.4%. Moreover, the American farmer population overall is aging, and currently only 6% of farmers are under ...
case studies; fisheries; models; population dynamics; population structure
Abstract:
... Understanding population dynamics is essential for achieving sustainable and productive fisheries. However, estimating recruitment in a stock assessment model involves the challenging task of identifying a self-sustaining population, which often includes representing complex geographic structure. A review of several case studies demonstrated that alternative stock assessment models can influence e ...
... Despite their generally negative attitude toward food waste, consumers often pursue goals that can inhibit their intention to reduce food waste. Identifying these goals that inhibit consumers’ intention to reduce food waste is essential for the development of successful public policy and retail approaches designed to curb or reduce household food waste. First, we conducted semi-structured qualitat ...
... The new lichen association, Verrucario viridulae-Staurotheletum hymenogoniae (Aspicilion contortae Roux 2009, Aspicilietalia calcareae Roux 2009, Verrucarietea nigrescentis Wirth 1980) is described here. It is formed on marl limestone pebbles in arid landscapes in the Northern Black Sea lowland. Forty-six species of lichens and ten lichenicolous fungi were observed and Staurothele hymenogonia, Ver ...
... Although the organic production concept is characterised by an efficient and environmentally sound production that is based on a few off-farm inputs as well as recycling organically grown products. Organic products are often perceived as safer and more promotive to consumers' health as compared to products from conventional or integrated production systems. However, from a hygienic point of view, ...
I López-Goñi; J Giner-Lamia; A Álvarez-Ordoñez; Alfonso Benitez-Páez; D Claessen; M Cortesao; M de Toro; D García-Ruano; E T Granato; Á T Kovács; J L Romalde; T G Sana; M Sánchez-Angulo; F J Sangari; W K Smits; T Sturm; J L Thomassin; K N G Valdehuesa; M Zapotoczna
educational materials; microbiology; online courses; social networks
Abstract:
... Twitter is one of the most popular social media networks that, in recent years, has been increasingly used by researchers as a platform to share science and discuss ongoing work. Despite its popularity, Twitter is not commonly used as a medium to teach science. Here, we summarize the results of #EUROmicroMOOC: the first worldwide Microbiology Massive Open Online Course taught in English using Twit ...
alternative medicine; analysis of covariance; clinical trials; heart rate; inventories; mental health; pain; quality of life; questionnaires; women; yoga; New Zealand
Abstract:
... BACKGROUND: The neurobiology of persistent pain shares common underlying psychobiology with that of traumatic stress. Modern treatments for traumatic stress often involve bottom-up sensorimotor retraining/exposure therapies, where breath, movement, balance and mindfulness, are used to target underlying psychobiology. Vigorous exercise, in particular Bikram yoga, combines many of these sensorimotor ...
... ‘BRS Vitória’ is a seedless table grape released by the grape breeding program of EMBRAPA in 2012. It has attracted great interest from grape growers because of the high fertility of its buds, its exotic and pleasant taste and its tolerance to downy mildew (Plasmopara viticola). The aim of this study was to characterize the agronomic and productive behavior of the grape ‘BRS Vitória’ under the tro ...
Botryosphaeria dothidea; Diplocarpon; Malus domestica; air; apples; disease resistance; fruit growing; fruit quality; fruits; fungal diseases of plants; leaves; oxidation; plant pathogenic fungi; taste; trees; China
Abstract:
... A good new late-ripening apple ‘Changping 8’ was raised at the Changli Institute of Pomology (China) in 2014. It was derived from a cross between ‘Iwafu 10’ and ‘Sakata Tsugaru’ in 1993. It is a moderately vigorous upright spreading tree that produces spurs freely. The cropping is good and picking time is late October. The fruits are middle-large in size with an attractive appearance. Its flesh is ...
... The production of citrus seedlings in Santa Catarina State has grown in the last few years. However, the process of seedlings production needs adjustment in order to optimize the system to get genetic material with high phytotechnical standard that allows greater profitability to the farmer. The objective of the present study is to evaluate the effect of different substrates and the removal of teg ...
... Polyfurfuryl alcohol (PFA) is a biobased thermoset like matrix with high thermal performances and cork powder or cork granules are side stream product from cork stoppers’ production . They were processed together via compression molding. Structural investigations were made by means of FT-IR and thermo-mechanical measurements were performed using tensile tests, thermogravimetric analyses (TGA) and ...
... Geoarchaeological research at the archaeological site of Mǎgura Gorgana should elucidate the environmental setting Neolithic and Copper Age communities were faced with, when they settled along the Lower Danube Valley, Romania. This should enable a better understanding of human-environment interactions, the natural preconditions of a trading network, as well as the living conditions of the human po ...
Prunus persica; agronomic traits; antioxidant activity; breeding programs; chlorophyll; clones; cultivation area; demonstration farms; flavor; flowering date; fruit growing; fruit quality; fruit weight; fruiting; fruits; leaf characteristics; leaves; magnesium oxide; orchards; peaches; phenols; propagation materials; ripening; seedlings; shoots; specific leaf weight; taste; titratable acidity; total soluble solids; trees; viruses; Greece
Abstract:
... The ‘Lemonato’ peach is a series of clones cultivated in Magnesia, central Greece. These clones were selected locally from seedling populations characterized by different time of ripening and different fruit quality traits. The fruit are phenotypically discriminated from the other peach cultivars, as they have typical yellow skin colour when ripe, very little red hue and unique flavor and taste. T ...
2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; ascorbic acid; ethylene; ethylene production; fruit maturity; fruits; harvest date; pears; scald diseases; storage time
Abstract:
... The interaction between ethylene, α-farnesene (AF), conjugated trienols (CTols) content and total antioxidant capacity (DPPH), depends on the maturity stage and affects superficial scald (SS) susceptibility. To evaluate the influence of fruit maturity at harvest on SS incidence in 'Packham's Triumph' pears, fruit were harvested on February 3 (H1); February 18 (H2) and March 3 (H3). Ethylene produc ...
... ‘Silistrenska ranna’ is a Bulgarian cultivar with an average fruit weight of 34 g, yellowish-orange skin color and gentle red over color. For improving its fruit quality, ‘Silistrenska ranna’ was used as a pollinator of ‘Lito’, a cultivar with attractive fruits and known as resistant to Plum Pox Virus (PPV). The inheritance of fruit weight, shape, skin ground color and over color, were observed. A ...
... A new endemic species from western Iran, Teucrium elymaiticum Attar, Sotoodeh & Mirtadzadini, spec. nova is described. It belongs to section Scordium. Considering the combination of some characteristics like indumentum, bracts, pedicel, calyx, corolla size, and nutlet shape and size, the new species is related to T. scordium subsp. scordioides (Schreb.) Arcang.. The differences between these two s ...
... (±)-Eurotone A [(±)-1], a pair of new enantiomeric polyketide dimers, as well as six known biogenetically related polyketides (2-7) were isolated from a marine-derived fungus Eurotium sp. SCSIO F452. Their structures were determined by comprehensive spectroscopic methods, X-ray diffraction and quantum chemical calculations. Compound 1 represented the first pair of spiro-dihydrobenzanthracene enant ...
Alternaria; X-ray diffraction; enantiomers; endophytes; fungi; moieties; nuclear magnetic resonance spectroscopy; probability analysis; quantum mechanics; risk
Abstract:
... The enantiomers (+)- and (−)-alternarilactone A (1), the first examples of dibenzo-α-pyrones bearing a diepoxy-cage-like moiety, were isolated from the endophytic fungus Alternaria sp. hh930. The deficiency in ¹H–¹H COSY and HMBC correlations caused by the highly oxidized caged system of 1 and the deceptive and ambiguous signals such as “W” couplings in NMR data increased the risk of structure mis ...
... A pair of enantiomeric norsesquiterpenoids, (+)- and (−)-preuisolactone A (1) [(+)-1 and (−)-1)] featuring an unprecedented tricyclo[4.4.0¹,⁶.0²,⁸]decane carbon scaffold were isolated from Preussia isomera. Their structures were determined by spectroscopic and computed methods and X-ray crystallography. Compounds (+)-1 and (−)-1 are two rare naturally occurring sesquiterpenoidal enantiomers. A pla ...
... In order to study the in vitro effect of flavan-3-ol (+)-catechin on the enzymatic activities of mitochondrial complex I and nitric oxide synthase (mtNOS), as well as the consequences on the membrane potential and H₂O₂ production rate, isolated mitochondria from rat heart were exposed to 3 nM to 100 μM (+)-catechin. NADH–Q₁ reductase (complex I) and mtNOS activities were inhibited 25% and 50%, res ...
... (+)-Catechin is a versatile compound with its pharmacophore (catechol and resorcinol) responsible for prooxidant and antibacterial activities. In this study, we present that demonstrating the synergistic interaction between (+)-catechin and quinolone-based antibiotics, ciprofloxacin and gemifloxacin is related to reactive oxygen species generation. The minimum inhibitory concentration of (+)-catec ...
... Depression is a mood disorder that is related to neuroinflammation and cognition loss. This study is aimed to determine the potential antidepressant effects of (+)-sesamin, a lignan component of sesame, in a mild stress-induced depression mouse model. CD-1 mice were treated with chronic unpredictable mild stress (CUMS) process and orally administrated with sesamin (50 mg/kg/d) for 6 weeks. Behavio ...
... Cardiac fibrosis contributes to both systolic and diastolic dysfunction in many cardiac pathophysiologic conditions. Antifibrotic therapies are likely to be a crucial strategy in curbing many fibrosis‐related cardiac diseases. In our previous study, an ethyl acetate extract of a traditional Chinese medicine Aristolochia yunnanensis Franch. was found to have a therapeutic effect on myocardial fibro ...
Ganoderma lucidum; X-ray diffraction; amino acids; biochemical pathways; chemical reactions; chemical structure; meroterpenoids
Abstract:
... (±)-Lucidumone (1), an enantiomeric meroterpenoid possessing an unprecedented skeleton comprising a fused 6/5/6/6/5 polycyclic system, was isolated from Ganoderma lucidum and structurally identified. The absolute configuration of (−)-1 was assigned by single-crystal X-ray crystallography. A plausible biosynthetic pathway for 1 is proposed. A chemical biology approach reveals that (−)-1 selectively ...
Porifera; alkaloids; cytotoxicity; human cell lines; imidazole; inhibitory concentration 50; liquid chromatography; neoplasm cells; nuclear magnetic resonance spectroscopy; spectral analysis
Abstract:
... LC-DAD/MS-based dereplication of organic extract of a calcareous sponge Leucetta chagosensis afforded one new chiral aminoimidazole-containing alkaloid, (-)-calcaridine B (1), along with one achiral imidazole analog leucettamine E (2) as well as one known imidazole derivative (2E, 9E)-pyronaamidine-9-(N-methylimine) (3). Their structures were elucidated on the basis of NMR spectroscopic analyses, ...
... (-)-Epigallocatechin-3-gallate (EGCG), the major phenolic compound of green tea, and hydroxytyrosol (HTyr), a phenol found in olive oil, have received attention due to their wide-ranging health benefits. To date, there are no studies that report their effect in bovine mammary gland. Therefore, the aim of this study was to evaluate the anti-oxidative and anti-inflammatory effects of EGCG and HTyr i ...
... Cigarette smoking is the leading cause for the initiation and development of cardiovascular disease (CVD). Oxidative stress and inflammatory responses play important roles in the pathophysiological processes of smoking-induced cardiac injury. (-)-epigallocatechin-3-gallate (EGCG), the most abundant catechin in green tea, which is made from Camellia sinensis leaves, has been reported to possess pot ...
... The quality of meat products is influenced by protein oxidation. Understanding the effects of antioxidant polyphenols and oxidizing lipoperoxides on myofibrillar proteins is essential for controlling the quality of meat products. This study was designed to investigate the epigallocatechin-3-gallate (EGCG)-mediated formation of myofibrillar protein emulsion gels under malondialdehyde (MDA)-induced ...
... Sodium-ion capacitors (SICs) have shown great potential to combine the merits of high-power capability of traditional capacitors and high energy capability of batteries. However, the sluggish kinetics and inferior stability of conventional sodium-ion storage anode materials are major challenges for the practical utilization of SICs. In this work, interconnected urchin-like hollow Na₂Ti₃O₇ (Na₂Ti₃O ...
... In this study, the (1→3)-β-D-glucan was isolated from yeast cell wall for investigating its effect on reducing the postharvest decay of pear fruit caused by Penicillium expansum and the underlying mechanisms. The results demonstrated that (1→3)-β-D-glucan could significantly induce disease resistance against P. expansum in pear wounds. (1→3)-β-D-glucan did not directly affect the growth of P. expa ...
chemical structure; high performance liquid chromatography; hydrolysates; mass spectrometry; organic chemistry; oxidation; oxygen; singlet oxygen; stable isotopes; uric acid
Abstract:
... Previously, we identified that parabanic acid (PA) and its hydrolysate, oxaluric acid (OUA), are the singlet oxygen-specific oxidation products of uric acid (UA). In this study, we investigated the PA formation mechanism by using HPLC and a time-of-flight mass spectrometry technique and identified unknown intermediates as (2,5-dioxoimidazolidin-4-ylidene)aminocarbonylcarbamic acid (DIAA), dehydroa ...
Citrus; arsenic; cytotoxicity; enzyme inhibitors; epithelial cells; genes; human diseases; lungs; mitogen-activated protein kinase; oxidative stress; pathogenesis; phosphatidylinositol 3-kinase; polymethoxyflavones; protein kinase C; sodium; toxic substances; ubiquitination
Abstract:
... Exogenous toxicants (e.g. arsenic, cigarette smoke), trigger oxidative stress, and initiate the pathogenesis of many human diseases. Induction of nuclear factor E2-related factor 2 (Nrf2) counteract exogenous toxicant-induced oxidative insults. Using a high-throughput screen, we firstly identified a citrus polymethoxyflavone, (2S)-5,6,7,3',4'-pentamethoxyflavanone (PMF), to be an Nrf2 activator, a ...
ambient temperature; chemical reactions; chemical structure; imines; pyrazoles
Abstract:
... The Brønsted base promoted (3 + 1) annulation reaction of C,N-cyclic azomethine imines and 3-chlorooxindoles was investigated, finally delivering complex hexahydroindeno[2,1-c] pyrazoles incorporating a spirocyclic oxindole motif after an unexpected rearrangement process. The asymmetric version of this new transformation could be accomplished, but slow racemization of the chiral product was observ ...
... Three-dimensional (3D)-chromatin organization is critical for proper enhancer-promoter communication and, therefore, for a precise execution of the transcriptional programs governing cellular processes. The emergence of Chromosome Conformation Capture (3C) methods, in particular Hi-C, has allowed the investigation of chromatin interactions on a genome-wide scale, revealing the existence of overlap ...
Termitidae; abdomen; alcohols; antennae; eggs; enantiomers; headspace analysis; hemolymph; long term experiments; reproduction; sesquiterpenoids; social insects; tissues
Abstract:
... The queens of advanced social insects maintain their reproductive monopoly by using exocrine chemicals. The chemistry of these “queen pheromones” in termites is poorly known. We show that primary queens of four higher termites from the subfamily Syntermitinae (Embiratermes neotenicus, Silvestritermes heyeri, Labiotermes labralis, and Cyrilliotermes angulariceps) emit significant amounts of the ses ...
... BACKGROUND: Organophosphorus pesticides (OP’s) are heavily constituted in agriculture, gardens, home and veterinary and although it is useful, there are concerns about the environment, safety and health of human and animals. In this study, we investigated the effects of a new oxime, (3Z)-5-Chloro-3-(Hydroxyimino)indolin-2-one (OXIME) against the alterations induced by malathion, an OP insecticide, ...
Lewis acids; catalytic activity; chemical reactions; diastereoselectivity; moieties; organic compounds; stereospecificity
Abstract:
... A general approach is described for the formation of tetrahydrothiepines using donor–acceptor cyclopropanes. Thiochalcones, functioning as sulfur-containing four-atom building blocks, were reacted in a Lewis acid catalyzed formal (4 + 3)-cycloaddition reaction with donor–acceptor cyclopropanes as three-atom building blocks. Under mild conditions various tetrahydrothiepines were synthesized in good ...
Marie-Hélène Tremblay; Félix Thouin; Johannes Leisen; John Bacsa; Ajay Ram Srimath Kandada; Justin M. Hoffman; Mercouri G. Kanatzidis; Aditya D. Mohite; Carlos Silva; Stephen Barlow; Seth R. Marder
... (4NPEA)₂PbI₄ (4NPEA = 4-nitrophenylethylammonium) is the first 3 × 3 corrugated 2D organic-Pb/I perovskite. The nitro groups are involved in cation–cation and cation-iodide interactions. The structure contains both highly distorted and near-ideal PbI₆ octahedra, consistent with the observation of two ²⁰⁷Pb NMR resonances, while the optical properties resemble those of other 2D perovskites with dis ...
Fomitopsis; carbon; chemical reactions; energy; flavor; food chemistry; fungal culture; mass spectrometry; mushrooms; nuclear magnetic resonance spectroscopy; odors; pineapples
Abstract:
... During the cultivation of the edible mushroom Fomitopsis betulina on agro-industrial side streams, a pleasant flavor strongly reminiscent of pineapple was perceived. Aroma extract dilution analyses identified two flavor components with a distinct pineapple odor. On the basis of mass spectrometric data, a Wittig reaction of (E)-penta-2,4-dien-1-yltriphosphonium bromide with ethyl levulinate was con ...
... (5R)-5-hydroxytriptolide (LLDT-8) is a triptolide analog with excellent capability against cancers, cerebral ischemic injury and rheumatoid arthritis. Here, we discovered its hepatoprotective effects in a mouse model of non-alcoholic fatty liver disease (NAFLD) by ameliorating liver lipid accumulation.Male C57BL/6J mice were fed with a high-fat/high-fructose (HFHFr) diet for 29 weeks to induce the ...
acids; aldehydes; alkynes; amides; carbon-hydrogen bond activation; catalysts; catalytic activity; chemical reactions; chemical structure; ketones; olefin; organic chemistry; ruthenium; water solubility
Abstract:
... The synthetic chemists always look for developing new catalysts, sustainable catalysis, and their applications in various organic transformations. Herein, we report a new class of water-soluble complexes, (Ar-tpy)Ruᴵᴵ(ACN)₃, utilizing designed terpyridines possessing electron-donating and -withdrawing aromatic residues for tuning the catalytic activity of the Ru(II) complex. These complexes displa ...
... Transport of Ag(i), Cd(ii), Co(ii), Cu(ii), Ni(ii), Pb(ii) and Zn(ii) cations across a bulk liquid membrane (BLM) containing N,N′-dibenzyl-N′′-(2,2,2-trifluoroacetyl)-phosphoric triamide (PTC) as a new carrier is studied by atomic absorption spectrometry. The results show selective and efficient transport of the copper(ii) cation from aqueous solution in the presence of the other cations. Various ...
... Co-combustion performances, ashes, gases and thermodynamics were quantified for spent potlining (SPL) and textile dyeing sludge (TDS) (with)out CaO. During the four decomposition stages of the blends according to the (D)TG experiments, the interaction among Na, Ca, F, Al, and S led to CaAl2O4, CaF2, and Na2SO4 which converted inorganic compounds into ash. Increased comprehensive combustion index, ...
carbon dioxide; crosslinking; gelation; ionic liquids; liquids; methane; permeability; polymerization; polymers; process design; thin film composite membranes; ultrafiltration; zeolites
Abstract:
... A three-component (cross-linked poly(ionic liquid) (PIL)–ionic liquid (IL)–zeolite), mixed-matrix membrane (MMM) platform based on curable IL prepolymers of controlled length has been developed for separating CO₂ from CH₄. Solutions of these curable prepolymers demonstrate increased resistance to support penetration compared to comparable solutions of analogous cross-linkable IL monomers. By adjus ...
... Air-stable iron carbonyl compounds bearing cyclopentadienone ligands with varying substitution were explored as catalysts in dehydrogenative diol lactonization reactions using acetone as both the solvent and hydrogen acceptor. Two catalysts with trimethylsilyl groups in the 2- and 5-positions, [2,5-(SiMe₃)₂-3,4-(CH₂)₄(η⁴-C₄C═O)]Fe(CO)₃ (1) and [2,5-(SiMe₃)₂-3,4-(CH₂)₃(η⁴-C₄C═O)]Fe(CO)₃ (2), were f ...
Ilda P. Ribeiro; Joana M. Rodrigues; Alexandra Mascarenhas; Vanessa Marques; Francisco Caramelo; Maria J. Julião; Thomas Liehr; Joana B. Melo; Isabel M. Carreira
... BACKGROUND: Head and neck squamous cell carcinoma cell lines are useful preclinical models to understand the molecular processes underlying the development of such tumors, and to establish targeted therapies. OBJECTIVE: We performed a comprehensive (cyto)genomic and epigenetic characterization of three new established primary human head and neck squamous cell carcinoma cultures and an established, ...
... A key challenge in the eco-friendly optoelectronic materials field is to find highly stable and nontoxic perovskite materials. Here, we report the optoelectronic properties and stability of the (C₆H₅NH₃)BiI₄ perovskite material. Using an eco-friendly gas pump treatment technique, a dense and pinhole-free (C₆H₅NH₃)BiI₄ film was fabricated. Remarkably, a large-area (>20 cm²) Bi-based perovskite film ...
Aspergillus flavus; acetyl coenzyme A; adenosine triphosphate; antifungal agents; apoptosis; crops; energy metabolism; enzymes; food production; human health; leaves; mechanism of action; median effective concentration; microbial contamination; minimum inhibitory concentration; mitochondria; phosphatidylserines; propidium; protein content; pyruvic acid; scanning electron microscopy; spore germination; spores; staining
Abstract:
... Fungal contamination imposes threats to agriculture and food production and human health. A method to safely and effectively restrict fungal contamination is still needed. Here, we report the effect and mode of action of (E)-2-hexenal, one of the green leaf volatiles (GLVs), on the spore germination of Aspergillus flavus, which can contaminate a variety of crops. The EC₅₀ value, minimum inhibitory ...
... BACKGROUND: Pea aphid (Acyrthosiphon pisum Harris) is one of the major pests in alfalfa crops, causing significant yield losses. (E)‐β‐farnesene (EβF), an alarm pheromone released by pea aphid, is generic to many species of aphids, and is used to minimize potential danger from predators and parasitoids by avoiding the source of the pheromone. RESULTS: In this study, EβF synthase gene was construct ...
age structure; assets; issues and policy; land use change; landscapes; rural development; soil erosion; vineyards; wines; Iberian Peninsula; Spain
Abstract:
... Vineyards have assumed a key role as rural landmarks in recent decades. Investigating vineyard dynamics and contexts may reveal various economic, cultural, and environmental aspects of rural landscapes, which can be linked to land-use changes and major soil degradation processes, including soil erosion. As a contribution to rural landscape studies, the purpose of this work is to investigate the sp ...
... In this paper, we apply the (G′/G)-expansion method based on three auxiliary equations, namely, the generalized Riccati equation , the Jacobi elliptic equation and the second order linear ordinary differential equation (ODE) to find many new exact solutions of a nonlinear partial differential equation (PDE) describing the nonlinear low-pass electrical lines. The given nonlinear PDE has been derive ...
... By using hydrofluoric acid as a solubilizer, the first alkali-metal niobium iodate and an alkali-earth metal niobium iodate, i.e. (H₃O)HCs₂Nb(IO₃)₉ and SrNbO(IO₃)₅, have been obtained. An obvious cation-controlled polarity shift is observed in the Ae/A-Nb⁵⁺-IO₃ system. (H₃O)HCs₂Nb(IO₃)₉ gives a strong second harmonic generation (SHG) signal about 6 times that of KH₂PO₄ (KDP), making it a promising ...
Common Agricultural Policy; compliance; meta-analysis; public opinion; rural areas; rural development; Europe
Abstract:
... For over 50 years, the Common Agricultural Policy (CAP) has been fundamental for European integration, while taking up to 40% of the budget. The new CAP uses various funds and aims at both agricultural production support and rural development. This dichotomy is confirmed by the Treaty on functioning of the EU and developed by various Regulations and Directives. However, are the stated and implied ...
Culicidae; birth rate; demography; dengue; disease control; disease outbreaks; human diseases; insect vectors; landscapes; larvae; mosquito control; population dynamics; risk
Abstract:
... Recent epidemics of mosquito‐borne dengue and Zika viruses demonstrate the urgent need for effective measures to control these diseases. The best method currently available to prevent or reduce the size of outbreaks is to reduce the abundance of their mosquito vectors, but there is little consensus on which mechanisms of control are most effective, or when and where they should be implemented. Alt ...
basins; lakes; microplastics; models; pollution; rivers; sediments; socioeconomics; Lake Geneva
Abstract:
... High amounts of macro and microplastic have been reported in rivers, lakes and seas. However, links between the observed pollution and their sources remain unclear. This study aims to clarify these links in the Lake Geneva basin by analysing each step of the local plastic life cycle.Two distinct approaches have been compared: (i) a top-down approach based on modelling socio-economic activities, pl ...
... Floodplains are prone to plant invasions, which increase their roughness and decrease their flood conveyance capacity. In recent decades, extremely high floods have occurred in the Tisza River (Hungary) without an increase in discharge. This could be partly explained by land cover changes, as plough fields and pastures have been replaced by forest plantations and invasive plants have become widesp ...
computer software; equations; hydrologic models; topography; water resources; wavelet
Abstract:
... This paper presents a scaled reformulation of a robust second-order Discontinuous Galerkin (DG2) solver for the Shallow Water Equations (SWE), with guiding principles on how it can be naturally extended to fit into the multiresolution analysis of multiwavelets (MW). Multiresolution analysis applied to the flow and topography data enables the creation of an adaptive MWDG2 solution on a non-uniform ...
algorithms; catalytic activity; chemical interactions; equipment; ligands
Abstract:
... A look at the elegance and efficiency of biological machines readily reveals that Nature masters the full gamut of chemical interactions to compose masterpieces of the living world. The present analysis singles out metal coordination for the actuation of nanomechanical motion. According to our analysis, metal coordination has a manifold of rewards, putting it primo loco in opportunities for puttin ...
... Small ruminant lentivirus (SRLV) control programs are mainly based on diagnostic tests performed on blood samples collected from sheep and goats. Since blood sampling is costly and stressful for the animals, we evaluated whether milk could be used as an inexpensive and easily collectable matrix for SRLV detection. We therefore compared SRLV detection via two commercial enzyme-linked immunosorbent ...
catalysts; chemical bonding; chemical reactions; cyclohexanes
Abstract:
... A silicon–aluminum heterocycle LAl(SiH₂SiH₂)₂AlL (L = PhC(NtBu)₂) (1) was prepared. Compound 1 exhibits a unique (N₂Al)₂(SiH₂)₄ centrosymmetric six-membered ring structure with a chair conformation, which is comparable with that of cyclohexane. Furthermore, two intermediate analogues, silylene–alane adduct LSi(AlMe₃)–Si(AlMe₃)L (2) and silylene–alane oxidative product [LAlHSiH₂Mes]₂ (3) were obtai ...
... (Phenylsulfonyl)acetonitrile (PSPAN) is investigated as a high-voltage additive to form a solid electrolyte interface (SEI) on an LiCoO₂ cathode. The results show that after 100 cycles, the capacity retention of Li/LiCoO₂ cells containing 1.0 wt % PSPAN increases from 66.34 to 91.84% and the rate performance of the cells also significantly increases. Linear sweep voltammetry results show that PSPA ...
... Pregnancy is a physiological stage with profound cardiovascular changes leading to hypotension. Preeclampsia (PE) reverts these normal changes inducing hypertension. Renin-angiotensin system (RAS) has been related in PE genesis. It has been reported a novel receptor in the system, the Prorenin/Renin receptor (PRR), with several roles in renal and cardiovascular illnesses. It is not known, however, ...
chemical compounds; chemical reactions; electric field; liquid crystals; luminescence
Abstract:
... A series of nonbridged axially chiral binaphthyl derivatives were synthesized and used as chiral dopants for chiral nematic liquid crystals (N*-LCs). It was found that binaphthyl derivatives substituted at 3,3′ positions or 2,2′ positions of binaphthyl rings could induce N*-LCs to show opposite circularly polarized luminescence (CPL) signals, despite having the same configuration. Additionally, a ...
... Dehydromenthofurolactone (tonkafuranone) and other bicyclic lactones are common flavour compounds and can be found in a variety of plants. Herein, we present an improved synthesis of the natural product and a series of close analogues, in combination with efficient purification methods for simple preparation from cheap and easily accessible chemicals. A two‐step, one‐pot, reaction procedure, consi ...
Internet; aerial photography; computer software; data collection; engineering; geographic information systems; growth and development; habitats; hydrologic data; islands; lidar; pollution load; remote sensing; riparian areas; rivers; sediment yield; sediments; spatial data; t-test; topographic maps; vegetation; Mississippi; Mississippi River
Abstract:
... The development and evolution of islands along the lower Mississippi River were examined over a 50 year period, between 1965 and 2015. Fluvial islands were historically a fundamental component of the riparian corridor, serving as important ecological habitat for aquatic and terrestrial species. Their degradation was associated with channel engineering, leading to a pronounced single thread channel ...
United Nations Framework Convention on Climate Change; acidification; acidity; adverse effects; climate change; governance; issues and policy; marine ecosystems; ocean acidification; politics
Abstract:
... Ocean acidification is most frequently framed by the scientific community as a concurrent threat to climate change, rather than an effect of it. This separation of the two phenomena has long been deemed as a way of garnering heightened policy attention for ocean acidification rather than having it bound up in the often contested politics of climate change. This effort, however, appears to have res ...
bottled water; developing countries; governance; humans; issues and policy; politics; tap water; water utilities
Abstract:
... Water insecurity in developing country contexts has frequently led individuals and entire communities to shift their consumptive patterns towards bottled water. Bottled water is sometimes touted as a mechanism to enact the human right to water through distribution across drought-stricken or infrastructure-compromised communities. However, the global bottled water industry is a multi-billion dollar ...
... Timely defence response is critical in any highly social bee species. Chemical signalling is closely linked to this behaviour, and several pheromones have been discovered. In this work, we identified the pheromone of the stingless bee Melipona solani and evaluated the electrophysiological and behavioural response of the bee to the identified compound. We determined that the mandibular glands serve ...
Cerambycidae; acetate esters; acetates; alcohols; field experimentation; flight; indigenous species; jars; males; pheromones; sesquiterpenoids; traps; Eastern United States
Abstract:
... Males of several species in the large cerambycid beetle subfamily Lamiine, native to South and North America, are known to produce aggregation-sex pheromones composed of three related structures: the sesquiterpene catabolic product geranylacetone, its corresponding alcohol (known as fuscumol), and the acetate ester of the alcohol (fuscumol acetate). Here, we show that males of two lamiine species ...
... Two (tetrahydrodibenzo[a,i]phenanthridin-5-yl)phenols that differ in their substituents at the para position (P1, R = H and P2, R = NEt₂) were designed and synthesized. The presence of a −NEt₂ group in probe P2 facilitates the twisted intramolecular charge transfer (TICT) process, making P2 emissive, which distinctly coordinated with boron trifluoride in the presence of different amines with diffe ...
Saccharomyces cerevisiae; aneuploidy; chromosomes; endoplasmic reticulum; eukaryotic cells; genes; homeostasis; protein folding; proteins; signal transduction; translation (genetics); unfolded protein response; yeasts
Abstract:
... During stress, accumulation of misfolded proteins in the endoplasmic reticulum (ER) triggers activation of the adaptive mechanisms that restore protein homeostasis. One mechanism that eukaryotic cells use to respond to ER stress is through activation of the unfolded protein response (UPR) signaling pathway, which initiates degradation of misfolded proteins and leads to inhibition of translation an ...
... The interest in metabolomic studies has rapidly increased over the past few years. Changes of endogenous compounds are typically detected in plasma or urine. However, the use of hair allows for long-term monitoring of metabolomic changes and has recently started being applied to metabolomic studies. Within the proposed study, we aimed for a systematical investigation of different pre-analytical pa ...
chemical bonding; chemical reactions; chemical structure; cysteine; drugs; pH; thiols
Abstract:
... We have developed a conjugation reaction based on the thia-Michael addition to activated triple bonds, which can be an alternative to maleimides, the most commonly used reagents to link thiol groups (of Cys) to drugs and labels. An amino group is converted into its propynamide and, in aqueous media at 37 °C and pH 7.4, Cys derivatives are added. The oxopropene-1,3-diyl linker is formed with excell ...
... This work re-investigates the pollution haven hypothesis in the context of Pakistan for the time span 1975–2016 by employing a non-linear autoregressive distribution lag (NARDL) approach. The empirical findings validate an symmetric association between FDI inflow and emissions in both the short and long run. Further, agriculture has an insignifancant positive impact on emissions, while trade oppen ...
... There is a very wide application of mathematics in communication theory, signal processing and networking. A network is formed by nodes communicating with each other. Graph theory plays a vital role in the area of networking research. A topological index is a numeric quantity obtained from a graph structure which is invariant under graph isomorphism. In this study, we obtained a generalized degree ...
... SCOPE: Although about 90% of lycopene in dietary sources occurs in the linear all‐trans conformation, a large proportion of the lycopene found in human tissues is of the cis‐isomer type, notably (5Z)‐lycopene. The biological effects of this (5Z) isomer have been under‐researched. The aim of this study is to evaluate some biological functions of (5Z)‐lycopene in adipocytes and to compare them with ...
... The stringent response alarmones pppGpp and ppGpp are essential for rapid adaption of bacterial physiology to changes in the environment. In Escherichia coli, the nucleosidase PpnN (YgdH) regulates purine homeostasis by cleaving nucleoside monophosphates and specifically binds (p)ppGpp. Here, we show that (p)ppGpp stimulates the catalytic activity of PpnN both in vitro and in vivo causing accumula ...
... A fundamental question in microbiology is how bacterial cells manage to coordinate gene expression with cell growth during adapting to various environmental conditions. Although the cellular responses to changing environments have been extensively studied using transcriptomic and proteomic approaches, it remains poorly understood regarding the molecular strategy enabling bacteria to manipulate the ...
flocculation; hydrodynamics; nanoparticles; van der Waals forces; water
Abstract:
... The collision efficiency functions, α(i,j), of two colliding particles for the three operative transport mechanisms in flocculation (Brownian motion [Br], fluid shear [Sh], and differential sedimentation [DS]) were numerically calculated over a broad size range (including nanoparticles). All computations include the hydrodynamic force and van der Waals (vdW) attraction, while the effects of electr ...
community supported agriculture; data collection; farmers; markets; models; surveys; California
Abstract:
... Community Supported Agriculture (CSA) faces substantial challenges in increasingly saturated and competitive markets in which competitors highlight their localness. Retention of members is crucial for the model to provide benefits to farmers; otherwise, excessive losses of members requires considerable recruitment efforts and undercuts farmer well-being. We conducted statewide research on CSAs in ...
European Union; databases; environmental impact; factor analysis; grazing; land use; livestock; meadows; sustainable agriculture
Abstract:
... This paper investigates differences and analogies among European Union (EU) countries concerning the links between agricultural activities and the impact on the environment. It analyses land use practices and agricultural production with two specific sets of indicators provided by the Eurostat database. Factor analysis is used to identify the key aspects of (un)sustainable agriculture and their re ...
... Three pairs of meroterpenoids (±) cochlearoids N–P (1–3) were isolated from the fruiting bodies of Ganoderma cochlear. Their structures including absolute configurations were assigned by spectroscopic techniques. All the isolated compounds were tested for their inhibitory activities toward BRD4, human cancer cells, and micro-organisms. The results show that the enantiomers of (±)-1 are BRD4 inhibi ...
Alternaria; X-ray diffraction; biochemical pathways; chemical reactions; chemical structure; endophytes; fungi; human cell lines; necrosis; polyketides
Abstract:
... A pair of enantiomeric polyketides, (+)- and (−)-alternamgin (1), featuring an unprecedented 6/6/6/6/5/6/6 seven ring backbone, were isolated from the endophytic fungi Alternaria sp. MG1. The relative configuration of 1 was determined using X-ray diffraction, and the absolute configurations of (±)-1 were confirmed by comparing the experimental and calculated ECD data. Plausible biosynthetic pathwa ...
... Two new dimeric compounds of the alternariol class, (±)-alternarlactones A (1) and B (2), were isolated along with 11 known compounds from the fungus Alternaria alternata P1210. Their structures were elucidated with the assistance of long-range HSQMBC to address inadequate cross-peaks in HMBC that result from the highly dense quaternary carbons, as well as theoretical calculations. All isolated al ...
... Two highly conjugated alkaloids xylaridines A (1) and B (2) were obtained as racemates from the fungus Xylaria longipes. They were resoluted into optically pure enantiomers, respectively. Their structures were determined by extensive spectroscopic analyses, X-ray diffraction, and equivalent circulating density (ECD) calculations. Compound 1 possesses a 5/6/6/5/5 fused ring system with unique 2-aza ...
Aspergillus; Balanus; X-ray diffraction; alkaloids; antifouling activities; chemical reactions; chemical structure; diketopiperazines; endophytes; fungi; high performance liquid chromatography; indoles; quantum mechanics; spectral analysis
Abstract:
... A pair of enantiomeric indole diketopiperazine alkaloid dimers [(−)- and (+)-asperginulin A (1a and 1b)] with an unprecedented 6/5/4/5/6 pentacyclic skeleton were isolated from the mangrove endophytic fungus Aspergillus sp. SK-28. The enantiomeric dimers were separated by chiral-phase HPLC. Their structures including absolute configurations were elucidated by spectroscopic analysis, X-ray diffract ...
Sergio de los Santos; Ramón Mauricio Coral-Vázquez; Marta Menjivar; María de los Ángeles Granados-Silvestre; María Elena Tejeda; Luis Antonio Reyes-Castro; Juan Pablo Méndez; Elena Zambrano; Patricia Canto
animal disease models; bone density; high fat diet; males; muscles; obesity; progeny; rats; visceral fat
Abstract:
... The aim of our study was to determine if two protocols of (−)-epicatechin (Epi) (short and long) can modify fat, muscle and bone mass, in the male offspring of the maternal rat obesity model induced by high-fat diet (HFD). Four male offspring per group from different litters were randomly selected to the control or Epi intervention groups. We administered Epi twice daily/13 weeks (long) or for two ...
... In addition to generating side effects and resistance, treatment for visceral leishmaniasis remains mostly ineffective and expensive, and it has a long duration. Thus, natural products are an important alternative for treatment of the disease. In this study, we demonstrate the in vitro and in vivo activity of (−)-epigallocatechin 3-O-gallate (1) against Leishmania infantum. Compound 1 reduced the ...
DNA damage; apoptosis; caspase-3; catechin; colorectal neoplasms; crop yield; drug therapy; epigallocatechin gallate; fluorouracil; green tea; human cell lines; inhibitory concentration 50; neoplasm cells; patients; transcription factor NF-kappa B
Abstract:
... Green tea accounts for approximately 20% of the world’s total tea yield. (−)-Epigallocatechin gallate (EGCG) is an active catechin in green tea, which suppresses tumor growth and enhances drug sensitivity in various cancers, but the molecular mechanism is still unclear. Chemotherapy drugs, such as 5-fluorouracil (5-FU), are a common strategy for clinical treatment of cancer patients; however, the ...
alkaline phosphatase; biomechanics; bone density; bone formation; bone marrow; bone morphogenetic proteins; enzyme activity; epigallocatechin gallate; estrogens; females; femur; gene expression; genes; lumbar spine; mechanical properties; messenger RNA; mice; micro-computed tomography; mineralization; rats; stem cells; tibia
Abstract:
... Previously, we found that (−)-epigallocatechin-3-gallate (EGCG) enhanced osteogenic differentiation of murine bone marrow mesenchymal stem cells by increasing the mRNA expression of osteogenesis-related genes, alkaline phosphatase activity and eventually mineralization. We further found EGCG supplementation preserved bone mass and microarchitecture in female rats during estrogen deficiency in the ...
carnitine palmitoyltransferase; chick embryos; droplets; gene expression; glucose-6-phosphate isomerase; lipogenesis; lipolysis; plasmids; protein kinases; protein synthesis; triacylglycerols
Abstract:
... The current research aimed to explore the impact of (−)-hydroxycitric acid (HCA) on fat metabolism and investigate whether this action of (−)-HCA was associated with modulation of glucose-6-phosphote isomerase (GPI) expression in chicken embryos. We constructed a recombinant plasmid (sh2-GPI) to inhibit GPI expression, and then embryos were treated with (−)-HCA. Results showed that (−)-HCA reduced ...
... (−)-Hydroxycitric acid (HCA) inhibits the deposition of fat in animals and humans, while the molecular mechanism is still unclear. The present study investigated the effect and mechanism of (−)-HCA’s regulation of lipid, glucose, and energy metabolism in broiler chickens. The current results showed that (−)-HCA decreased the accumulation of lipid droplets and triglyceride content by reducing fatty ...
Abu Bakar Siddique; Hassan Y. Ebrahim; Mohamed R. Akl; Nehad M. Ayoub; Amira A. Goda; Mohamed M. Mohyeldin; Suresh K. Nagumalli; Wael M. Hananeh; Yong-Yu Liu; Sharon A. Meyer; Khalid A. El Sayed
... Dysregulation of epidermal growth factor receptor (EGFR)/human epidermal growth factor-2 (HER2) family is a hallmark of aggressive breast cancer. Small-molecule tyrosine kinase inhibitors are among the most effective cancer targeted treatments. (−)-Oleocanthal (OC) is a naturally occurring phenolic secoiridoid lead from extra-virgin olive oil with documented anti-cancer activities via target ...
chemical reactions; chemical structure; copper; ligands; organic chemistry; organochlorine compounds
Abstract:
... l-(−)-Quebrachitol (QCT) has been found as a ligand of copper powder for selective N-arylation of nitrogen-containing heterocycles with aryl halides. Furthermore, another potential catalytic system (copper powder/QCT/t-BuOK) was successfully adapted to unactivated aryl chlorides. ...
... (−)-menthol, a major form of menthol, is one of the most commonly used chemicals. Many studies have demonstrated that (−)-menthol produces analgesic action through peripheral mechanisms which are mainly mediated by activation of TRPM8. Moreover, intrathecal injection of menthol induces analgesia as well. However, the central actions and mechanisms of (−)-menthol remain unclear. Here, we have inves ...
... Neuropathic orofacial pain conditions represent a challenge to diagnose and treat. Natural substances are promising therapeutic options for the control of pain.This study aimed to examine whether (−)-α-bisabolol (BISA), a natural terpene, can attenuate nociceptive behaviour and central sensitisation in a rodent model of trigeminal neuropathic pain.Infraorbital nerve transection (IONX) or sham oper ...
... Batch fermentation of molasses for L(+) lactic acid production using corn steep liquor (CSL) as nitrogen source by immobilized Lactobacillus (Lb.) casei MTCC 1423 has been studied. Among different tested immobilizing matrices, sodium alginate has been observed to be the best matrix for L(+)-lactic acid production. Significant reduction in cell release with double layer coated (chitosan and alginat ...
Sofie Bjørnholt Binzer; Daniel Killerup Svenssen; Niels Daugbjerg; Catharina Alves-de-Souza; Ernani Pinto; Per Juel Hansen; Thomas Ostenfeld Larsen; Elisabeth Varga
... Harmful blooms formed by planktonic microalgae (HABs) in both freshwater and coastal waters regularly lead to severe mortalities of fish and invertebrates causing substantial economic losses of marine products worldwide. The mixotrophic haptophyte Prymnesium parvum is one of the most important microalgae associated with fish kills. Here 26 strains of P. parvum with a wide geographical distribution ...
... C-type starches isolated from different colored root tubers of sweet potatoes were investigated to reveal the distribution of A- and B-type crystals using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), and hot stage microscopy. The results showed that starches from different colored sweet potatoes all exhibited CA-type XRD patterns and wide DSC thermal peak curves. The therma ...
... Oxidative stress and impaired insulin secretion is an underlying major risk factor for the development of type 2 diabetes (T2D). Uncoupling protein-2 (UCP2) is involved in the regulation of reactive oxygen species production, insulin secretion, and lipid metabolism. Based on this we aimed to find an association of UCP2 (G-866A) polymorphism with the risk of T2D in South Indian population.A total o ...