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Sarah A. Doydora; Dorcas Franklin; Peizhe Sun; Miguel Cabrera; Aaron Thompson; Kimberly Love-Myers; John Rema; Vaughn Calvert; Spyros G. Pavlostathis; Ching-Hua Huang
... Polyether ionophores, monensin, and salinomycin are commonly used as antiparasitic drugs in broiler production and may be present in broiler litter (bird excreta plus bedding material). Long-term application of broiler litter to pastures may lead to ionophore contamination of surface waters. Because polyether ionophores break down at low pH, we hypothesized that decreasing litter pH with an acidic ...
barges; basins; dams (hydrology); laws and regulations; rivers; soybeans; waterways; Amazon River; Brazil
Abstract:
... Brazil plans to build 43 “large” dams (>30 MW) in the Tapajós Basin, ten of which are priorities for completion by 2022. Impacts include flooding indigenous lands and conservation units. The Tapajós River and two tributaries (the Juruena and Teles Pires Rivers) are also the focus of plans for waterways to transport soybeans from Mato Grosso to ports on the Amazon River. Dams would allow barges to ...
Margaret E. Stevenson; Regina Sommer; Gerhard Lindner; Andreas H. Farnleitner; Simon Toze; Alexander K.T. Kirschner; Alfred P. Blaschke; Jatinder P.S. Sidhu
Mastadenovirus; aquifers; bacteriophages; calcite; ionic strength; laboratory experimentation; limestone; nanoparticles; pH; pathogens; porous media; soil; virulent strains; South Australia
Abstract:
... The transport of human adenovirus, nanoparticles, and PRD1 and MS2 bacteriophages was tested in fine granular limestone aquifer material taken from a borehole at a managed aquifer recharge site in Adelaide, South Australia. Comparison of transport and removal of virus surrogates with the pathogenic virus is necessary to understand the differences between the virus and surrogate. Because experiment ...
... Biopiles can be used to dispose of slaughterhouse residuals (SLRs); however, the fate of pathogenic bacteria (e.g., pathogenic strains of Eschericia coli, Streptococcus fecalis) in these systems is not well understood. The transport of these bacteria in water leaching from the biopile could represent a significant contamination source. This research examined the transport of Enterobacteriaceae and ...
ammonium; denitrification; ecosystems; freshwater; nitrate nitrogen; nitrates; nitrogen; organic soils; pollution load; ponds; stable isotopes; streams; watersheds; wetlands; New England region; Rhode Island
Abstract:
... Beaver-created ponds and dams, on the rise in the northeastern United States, reshape headwater stream networks from extensive, free-flowing reaches to complexes of ponds, wetlands, and connecting streams. We examined seasonal and annual rates of nitrate transformations in three beaver ponds in Rhode Island under enriched nitrate-nitrogen (N) conditions through the use of ¹⁵N mass balance techniqu ...
... OBJECTIVE: To retrospectively investigate a novel surgical technique using the Fitz Intervertebral Traction Screw (FITS) combined with string‐of‐pearl (SOP™) locking plates for the treatment of Disc Associated Wobbler Syndrome (DAWS). STUDY DESIGN: Case series (n = 16). METHODS: Ventral approach and fenestration of the affected disc(s), nuclear extirpation, and insertion of the FITS device to the ...
Escherichia coli; Pseudomonas putida; aquifers; bacteriophages; drinking water; filtration; fluorescence; gravel; groundwater; mass transfer; monitoring; solutes; tracer techniques; wells; Germany; Western European region
Abstract:
... Gravel aquifers act as important potable water sources in central western Europe, yet they are subject to numerous contamination pressures. Compositional and textural heterogeneity makes protection zone delineation around groundwater supplies in these units challenging; artificial tracer testing aids characterization. This paper reappraises previous tracer test results in light of new geological a ...
... Current knowledge on coccinellids is primarily focused on their role as natural enemies of soft-bodied insects. However, there is a great diversity of coccinellid parasitoid species that are less studied. Here, we describe new records of coccinellid parasitoids with emphasis on new host–parasitoid interactions in 11 sample sites in Brazil. We collected 122 coccinellid individuals parasitized by si ...
... Tembusu virus (TMUV) belongs to the genus Flavivirus that may cause severe egg drop in ducks. In order to evaluate the most efficient TMUV detection method, the performances of a conventional RT-PCR (C-RT-PCR), a semi-nested PCR (SN-RT-PCR), a reverse-transcriptase real-time quantitative PCR (Q-RT-PCR), and a reverse-transcription loop-mediated isothermal amplification (RT-LAMP) targeting the TMUV ...
body condition; body weight; cats; dogs; excision; hemorrhage; image analysis; injection site; mixed breeds; nerve tissue; osteosarcoma
Abstract:
... OBJECTIVE: To provide (1) a comprehensive description of hemipelvectomy; and (2) report clinical application and outcome of hemipelvectomy in dogs and cats. STUDY DESIGN: Descriptive report and retrospective case series. ANIMALS: Dogs (n = 4) and 5 cats. METHODS: Cadaveric dissection was performed for imaging purposes using 4 mixed breed dogs euthanatized for reasons unrelated to this study. Medic ...
... The presence of purple bacteria in manure storage lagoons is often associated with reduced odors. In this study, our objectives were to determine the occurrence of purple sulfur bacteria (PSB) in seven dairy wastewater lagoons and to identify possible linkages between wastewater properties and purple blooms. Community DNA was extracted from composited wastewater samples, and a conservative 16S rRN ...
data collection; dogs; gait; kinematics; models; stifle; surgery
Abstract:
... OBJECTIVE: To evaluate examiner variability in a superficial skin marker model of canine stifle kinematics. STUDY DESIGN: Experimental. ANIMALS: Six clinically normal dogs. METHODS: Dogs had 11 retroreflective markers fixed to the skin on the right hindlimb. Dogs were trotted 5 times through the calibrated testing space and this was repeated on 4 different testing days. Examiner A applied all mark ...
... OBJECTIVES: To investigate whether administration of postoperative oral antimicrobial drugs has a beneficial effect on preventing surgical site infections (SSI) in clean orthopedic surgery involving stainless steel plating systems. STUDY DESIGN: Randomized prospective clinical study. ANIMALS: Dogs (n = 97). METHODS: One hundred consecutive cases (97 dogs) that had clean orthopedic surgery requirin ...
... New institutions are critically needed to improve the resilience of social–ecological systems globally. Watershed management offers an important model due to its ability to govern mixed-ownership landscapes through common property regimes, translating national goals into local action. Here, I assess the efficacy of state watershed management institutions in the Pacific Northwest, based on their ab ...
... Highly hydrophobic organic chemicals (HOCs), like pyrethroids, adsorb strongly to eroded soil and suspended sediment. Therefore, total suspended solids (TSS) concentration in the water column of receiving waters is important for determining the proportion of chemical in the sediment-sorbed vs. the dissolved (bioavailable) state. However, most current regulatory exposure models, such as the Exposur ...
... OBJECTIVES: To evaluate avian allogeneic demineralized bone matrix (DBM) in the healing of long bone defects as a function of geometry and time in a pigeon model. STUDY DESIGN: Experimental. ANIMALS: Adult rock pigeons (n = 60). METHODS: Midshaft ulnar osseous defects were grafted with 2 geometric forms of DBM (tubular vs. chipped) and stabilized with a hybrid fixator. Autologous chips of sternal ...
... Aquaporin‐1 (AQP1), a six‐transmembrane domain protein, belongs to a highly conserved group of proteins called aquaporins known to regulate permeability across cell membranes. Although the role of AQP1 has been extensively studied, its specific activity along the gastrointestinal tract in animals during early postnatal development is poorly known. This study investigates the expression of AQP1 mRN ...
Xunde Li; Edward R. Atwill; Elizabeth Antaki; Olin Applegate; Brian Bergamaschi; Ronald F. Bond; Jennifer Chase; Katherine M. Ransom; William Samuels; Naoko Watanabe; Thomas Harter
Campylobacter; Enterococcus; Escherichia coli O157; Salmonella; alluvial aquifer; antibiotic resistance; antibiotics; concentrated animal feeding operations; dairies; groundwater; irrigation; land use; monitoring; potassium; surveys; virulent strains; water quality; wells; California
Abstract:
... Surveys of microbiological groundwater quality were conducted in a region with intensive animal agriculture in California, USA. The survey included monitoring and domestic wells in eight concentrated animal feeding operations (CAFOs) and 200 small (domestic and community supply district) supply wells across the region. Campylobacter was not detected in groundwater, whereas Escherichia coli O157:H7 ...
... In the present study, two experiments were designed to investigate the lethal and sublethal effects of methoxyfenozide on Spodoptera litura (F.). The first experiment was conducted to explore the fitness cost of methoxyfenozide resistance in a methoxyfenozide-resistant strain (selected with methoxyfenozide for 13 consecutive generations), leading to resistance ratio to methoxyfenozide 83.0- and 23 ...
... Metal ions and anions play important roles in many industrial and biochemical processes, and thus it is highly desired to detect them in the relevant systems. Small organic molecule based sensors for selective and sensitive detection of target ions show the advantages of low cost, high sensitivity and convenient implementation. In this area, pyrrole has incomparable advantages. It can be easily in ...
... The structure and histochemical properties of the intestine in bronze corydoras (Corydoras aeneus), a stomach‐containing teleost, are described, with emphasis on goblet cells and mucin types. The proximal intestine displayed a normal structure for teleosts, whereas the distal intestine was wide, translucent, thin‐walled, richly vascularized and constantly filled with air, suggesting an important r ...
Nobel Prize; chemical bonding; chemical reactions; computational methodology; development theory; models; quantum mechanics; solids; wills
Abstract:
... Almost a century has passed since valence bond (VB) theory was originally introduced to explain covalent bonding in the H₂ molecule within a quantum mechanical framework. The past century has seen constant improvements in this theory, with no less than two distinct Nobel prizes based on work that is essentially developments in VB theory. Additionally, ongoing advances in both methodology and compu ...
... Ionic liquids (IL) and hydrogen bonding (H-bonding) are two diverse fields for which there is a developing recognition of significant overlap. Doubly ionic H-bonds occur when a H-bond forms between a cation and anion, and are a key feature of ILs. Doubly ionic H-bonds represent a wide area of H-bonding which has yet to be fully recognised, characterised or explored. H-bonds in ILs (both protic and ...
... In the present study, the immune protective effects of recombinant microneme protein 7 of Eimeria maxima (rEmMIC7) and a DNA vaccine encoding this antigen (pVAX1-EmMIC7) on experimental challenge were evaluated. Two-week-old chickens were randomly divided into five groups. Experimental groups of chickens were immunized with 100 μg DNA vaccine pVAX1-MIC7 or 200 μg rEmMIC7, while control groups of c ...
... Gallibacterium anatis is a major cause of reproductive tract infections in chickens. Here, we aimed to evaluate the efficacy of the recombinant protein GtxA-N at protecting hens, by addressing three objectives; (i) evaluating the antibody response following immunization (ii) scoring and comparing lesions, following challenge with G. anatis , in immunized and non-immunized hens and (iii) investigat ...
... This study focused on the importance of the colmation layer in the removal of cyanobacteria, viruses, and dissolved organic carbon (DOC) during natural bank filtration. Injection-and-recovery studies were performed at two shallow (0.5 m deep), sandy, near-shore sites at the southern end of Ashumet Pond, a waste-impacted, kettle pond on Cape Cod, MA, that is subject to periodic blooms of cyanobacte ...
... Conventional indirect approaches for estimating pesticide volatility from agricultural fields require an air dispersion model and near-field, temporal air concentration measurements. The model pesticide flux profile is chosen such that field observations are recovered. Ross et al. (1996) first proposed a back-calculation method (BCM) using a single iteration of the Industrial Source Complex Short ...
... Genotyping of seven infectious bronchitis virus (IBV) strains isolated in Brazil showed that all belonged to the common Brazilian genotype and that these strains were closest to the subcluster of strain IBV/Brazil/2007/USP-19. Pathotyping of four selected Brazilian strains showed that they all caused a considerable level of ciliostasis in the trachea but at a somewhat lower level than did M41 and ...
Chironomidae; dry season; forests; habitats; larvae; lotic systems; species diversity; streams; Brazil
Abstract:
... Studies on mesohabitat scale have been used to shed light on the ecology and distribution of chironomid larvae in small streams. Thus, the objective of the present study was to examine the diversity and distribution of the Chironomidae assemblage on the mesohabitat scale in three streams located in different preserved areas of southeastern Brazil. In each stream, litter samples were obtained in th ...
... Bioinsecticides are being increasingly used to protect vegetable crops against herbivores, but data on the side effects of such strategy on the third trophic level are still required. We investigated the influence of the Bacillus thuringiensis subsp. kurstaki HD-1 strain and of the commercial bioinsecticide Agree® on the biological aspects of the predator Podisus nigrispinus (Dallas) (Hemiptera: P ...
... Soil and aquifer materials have a finite capacity for colloid retention. Blocking of the limited number of available retention sites further decreases the rate of retention with time and enhances risks (e.g., pathogens or colloid-associated contaminants) or benefits (e.g., remediation by microorganisms or nanoparticles) of colloid migration. Our objective was to use a straightforward procedure, ba ...
... Glyphosate [N-(phosphono-methyl)-glycine] is the main herbicide used in the Chianti vineyards. Considering the pollution risk of the water table and that the vineyard tile drain may deliver this pollutant into nearby streams, the objective of the present study was to estimate the leaching losses of glyphosate under natural rainfall conditions in a silty clay soil in the Chianti area. The leaching ...
... Reports of the damage from wolf attacks have increased considerably over the last decade in Georgia (in the Caucasus). We interviewed locals about this problem in two focal regions: the Lanchkhuti area (in western Georgia) and Kazbegi District (in eastern Georgia) where livestock numbers had increased by an order of magnitude owing to dramatic shifts in the local economies over the last decade. Th ...
... OBJECTIVE: To test a polyethylene terephthalate prosthesis (STIF, Chenove, France) for gastrocnemius tendon repair in dogs (cadaver model). STUDY DESIGN: In vitro mechanical study. ANIMALS: Pelvic limbs (n = 8) from 4 recently euthanatized adult dogs (weighing 30–45 kg). METHODS: Proximally the implant was sutured at the myotendinous junction of the gastrocnemius and distally secured in a 4.5 mm b ...
... Microorganisms constitute an almost exclusive form of life in the earth’s subsurface environment (not including caves), particularly at depths exceeding the soil horizon. While of broad interest to ecology and geology, scientific interest in the fate and transport of microorganisms, particularly those introduced through the anthropogenic environment, has focused on understanding the subsurface env ...
information processing; systems engineering; transistors
Abstract:
... In this tutorial review, the most recent developments in the field of molecular logic and information processing are discussed. Special emphasis is given to the report of progress in the concatenation of molecular logic devices and switches, the design of memory systems working according to the principles of sequential logic, the mimicking of transistors, and the research on photochromic platforms ...
... The aim of this study was the description of the lingual and buccal papillae in adult alpaca (Vicugna pacos) by light and scanning electron microscopy (SEM). The tongue consisted of apex, body and root. Four types of lingual papillae (filiform, fungiform, conical and circumvallate) in addition to two types of buccal papillae were observed. The filiform papillae, some with secondary papillae, were ...
RNA; antineoplastic agents; biomarkers; cancer therapy; drug design; immunogenicity; oligonucleotides; single-stranded DNA; synthesis
Abstract:
... Aptamers are single-stranded DNA or RNA oligomers, identified from a random sequence pool, with the ability to form unique and versatile tertiary structures that bind to cognate molecules with superior specificity. Their small size, excellent chemical stability and low immunogenicity enable them to rival antibodies in cancer imaging and therapy applications. Their facile chemical synthesis, versat ...
Lewis acids; alkenes; carbon-hydrogen bond activation; oxidation
Abstract:
... Direct olefinic C–H functionalization represents the ideal way of introducing an alkenyl group into organic molecules. A well-known process is the Heck reaction, which involves alkene insertion and β-hydride elimination in the presence of a transition metal. However, the traditional Heck reaction mainly deals with the alkenylation of aryl or vinyl electrophiles. Recent developments have revealed t ...
... OBJECTIVE: To evaluate short‐ and long‐term outcome after medical and surgical management of horses with cecal impaction and to determine reasons for death or euthanasia. STUDY DESIGN: Retrospective case series. ANIMALS: Horses (n = 150). METHODS: Data collected from medical records (1991–2011) of horses with a diagnosis of cecal impaction, included signalment, history of recent disease/surgical p ...
... Recycling of stormwater water and treated effluent via managed aquifer recharge (MAR) has often been hampered because of perceptions of low microbiological quality of recovered water and associated health risks. The goal of this study was to assess the removal of selected pathogens in four large-scale MAR schemes and to determine the influence of aquifer characteristics, geochemistry, and type of ...
... OBJECTIVE: To examine perioperative mortality, long‐term survival, causes of death, and prognostic factors for dogs and cats undergoing surgical excision of thymic epithelial tumors (TETs). STUDY DESIGN: Multi‐institutional case series. ANIMALS: Eighty dogs and 32 cats. METHODS: Follow‐up information was obtained for dogs and cats that underwent surgical excision of a TET between 2001 and 2012. RE ...
Lama guanicoe; aesthetics; flagship species; habitats; interviews; landscapes; memory; public opinion; questionnaires; silvopastoral systems; Chile
Abstract:
... Multiple forms of valuation contribute to public acceptance of conservation projects. Here, we consider how esthetic, intrinsic, and utilitarian values contribute to public attitudes toward a proposed reintroduction of guanaco (Lama guanicoe) in a silvopastoral system of central Chile. The nexus among landscape perceptions and valuations, support for reintroductions, and management of anthropogeni ...
Influenza A virus; antibodies; chickens; conjunctivitis; direct contact; hosts; intravenous injection; meat; necropsy; racing pigeons; viruses
Abstract:
... To determine the susceptibility of pigeons to the newly emerged avian influenza virus subtype H7N9, we experimentally infected three different types of pigeons (meat, town, and racing) with two different doses (2 × 10 ⁴ or 2 × 10 ⁵ EID ₅₀) of H7N9 avian influenza virus A/Chicken/China/2013 by either intranasal and intraocular inoculation (IN + IO) or intravenous injection (IV). In addition, the po ...
blanching; cortex; dogs; forelimbs; humeral fractures; humerus; radiography; surgery
Abstract:
... OBJECTIVE: To determine the optimal intramedullary (IM) pin size for open and percutaneous normograde pinning of the distal humerus. STUDY DESIGN: Ex vivo anatomic study. SAMPLE POPULATION: Sixteen canine cadavers. METHODS: Sixteen pairs of forelimbs were harvested from canine cadavers weighing 25–35 kg. The craniocaudal diameter of the humeral medullary canal, at the distal 80th percentile of its ...
... Colloid attachment is an important retention mechanism. It is influenced by colloid size, pore size, and flow rate, among other factors. In this work, we studied colloid attachment experimentally under various flow rates, as well as colloid release in response to a rapid change of flow rate. Colloid transport experiments under saturated conditions and with different flow rates were conducted in a ...
disease control; dogs; drug therapy; drugs; orthopedics; prostheses; questionnaires; surgery
Abstract:
... OBJECTIVES: To determine whether extending prophylactic antimicrobial administration into the postoperative period would decrease the surgical site infection (SSI) rate in clean canine orthopedic surgery associated with a metal implant. STUDY DESIGN: Randomized prospective clinical study. SAMPLE POPULATION: Consecutive procedures (n = 400) on dogs that had clean orthopedic surgery using a metal im ...
Bacteroidetes; Campylobacter; Cryptosporidium; Enterovirus; Escherichia coli; Norovirus; birds; developmental stages; drinking water; floodplains; groundwater; microbiological quality; models; pathogens; public water supply; risk; risk assessment; rivers; runoff; swimming; viruses; wastewater; water quality; watersheds; wildlife; Austria; Danube River
Abstract:
... Given the complex hydrologic dynamics of water catchments and conflicts between nature protection and public water supply, models may help to understand catchment dynamics and evaluate contamination scenarios and may support best environmental practices and water safety management. A catchment model can be an educative tool for investigating water quality and for communication between parties with ...
... To gain more insight into the within flock transmission of Histomonas meleagridis , the shedding of parasites was quantified by a newly developed real-time quantitative (q)PCR and the basic reproduction number (R ₀) and the mean number of secondary infections per infectious bird per day in a susceptible population (β) of H. meleagridis in the absence of heterakis were assessed. Forty turkeys were ...
Termitidae; digital images; geographical distribution; imagos; redescriptions; tropics; Brazil
Abstract:
... Based on a reexamination of specimens of Crepititermes Emerson deposited in the Museu de Zoologia da Universidade de São Paulo, São Paulo, Brasil (MZUSP), we characterize the morphology and coiling in situ of the digestive tube of workers of Crepititermes verruculosus Emerson for the first time. We provide additional notes on the imago and soldier and present digital images and illustrations for a ...