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1. Pb induced mitochondrial fission of fibroblast cells via ATM activation

Author:
Qi, Yongmei; Ma, Lin; Naeem, Sajid; Gu, Xueyan; Chao, Xijuan; Yuan, Cong; Huang, Dejun
Source:
Journal of hazardous materials 2021 v.416 pp. 126177
ISSN:
0304-3894
Subject:
lead,   etc   ; fibroblasts; mitochondria; mitophagy;     Show all 4 Subjects
Abstract:
... Previous study showed that lead (Pb) could induce ATM-dependent mitophagy. However, whether Pb has any impact on mitochondrial fusion and fission, the upstream events of mitophagy, and how ATM connects to these processes remain unclear. In this study, we found that Pb can disrupt mitochondrial network morphology as indicated by increased percentage of shortened mitochondria and by decreased mitoch ...
DOI:
10.1016/j.jhazmat.2021.126177

2. Theoretical analysis on lead halides content dependences of defect structures and spin Hamiltonian parameters in lead halo borate glass composites with V2O5 dopants

Author:
Liu, Xu-Sheng; Wu, Shao-Yi; Shen, Gao-Qiang; Yu, Xing-Yuan; Zhu, Qin-Sheng; Li, Xiao-Yu
Source:
Composites 2021 v.146 pp. 106414
ISSN:
1359-835X
Subject:
lead,   etc   ; borates; glass;     Show all 3 Subjects
Abstract:
... The defect structures and spin Hamiltonian parameters (SHPs) for V⁴⁺ in lead halo borate (xPbX₂–(30 − x)PbO–68B₂O₃, X = F, Cl, Br and x = 5, 10, 15, 20 and 25 mol%) glass composites containing 2 mol% of V₂O₅ dopant are theoretically studied by applying the perturbation formulas of the SHPs for tetragonally compressed octahedral 3d¹ clusters. The experimental SHPs are suitably reproduced by the opt ...
DOI:
10.1016/j.compositesa.2021.106414

3. Characterizations and Understanding of Additives Induced Passivation Effects in Narrow-Bandgap Sn–Pb Alloyed Perovskite Solar Cells

Author:
Yang, Yang Michael; Chen, Xinya; Liu, Shaocong; Zhu, Haiming; Wang, Wensheng; Kuang, Cuifang; Liu, Xu
Source:
Journal of physical chemistry 2021 v.125 no.23 pp. 12560-12567
ISSN:
1932-7455
Subject:
lead,   etc   ; energy; physical chemistry;     Show all 3 Subjects
Abstract:
... Narrow-bandgap Sn–Pb alloyed perovskite solar cells have higher SQ limits than the widely studied lead based perovskites, but they often suffer from more severe energy losses. Pb(SCN)₂ and SnF₂ additives were widely used in those narrow-bandgap perovskite solar cells, but the underlying mechanisms were not much understood yet. Here, we employed spatially and time-resolved spectroscopies to investi ...
DOI:
10.1021/acs.jpcc.1c03213

4. MalDA, Accelerating Malaria Drug Discovery

Author:
Yang, Tuo; Ottilie, Sabine; Istvan, Eva S.; Godinez-Macias, Karla P.; Lukens, Amanda K.; Baragaña, Beatriz; Campo, Brice; Walpole, Chris; Niles, Jacquin C.; Chibale, Kelly; Dechering, Koen J.; Llinás, Manuel; Lee, Marcus C.S.; Kato, Nobutaka; Wyllie, Susan; McNamara, Case W.; Gamo, Francisco Javier; Burrows, Jeremy; Fidock, David A.; Goldberg, Daniel E.; Gilbert, Ian H.; Wirth, Dyann F.; Winzeler, Elizabeth A.
Source:
Trends in parasitology 2021 v.37 no.6 pp. 493-507
ISSN:
1471-4922
Subject:
lead,   etc   ; antimalarials; malaria; parasitology;     Show all 4 Subjects
Abstract:
... The Malaria Drug Accelerator (MalDA) is a consortium of 15 leading scientific laboratories. The aim of MalDA is to improve and accelerate the early antimalarial drug discovery process by identifying new, essential, druggable targets. In addition, it seeks to produce early lead inhibitors that may be advanced into drug candidates suitable for preclinical development and subsequent clinical testing ...
DOI:
10.1016/j.pt.2021.01.009

5. The validity and reliability of an open source biosensing board to quantify heart rate variability

Author:
Burma, Joel S.; Lapointe, Andrew P.; Soroush, Ateyeh; Oni, Ibukunoluwa K.; Smirl, Jonathan D.; Dunn, Jeff F.
Source:
Heliyon 2021 v.7 no.6 pp. e07148
ISSN:
2405-8440
Subject:
lead,   etc   ; electrocardiography; heart rate;     Show all 3 Subjects
Abstract:
... Heart rate variability (HRV) is a popular tool to quantify autonomic function. However, this typically requires an expensive 3–12 lead electrocardiogram (ECG) and BioAmp system. This investigation sought to determine the validity and reliability of an OpenBCI cyton biosensing board (open source) for accurately quantifying HRV.A cyton board with a 3-lead ECG was employed to acquire heart rate wavef ...
DOI:
10.1016/j.heliyon.2021.e07148

6. Why are Double Perovskite Iodides so Rare?

Author:
Vishnoi, Pratap; Seshadri, Ram; Cheetham, Anthony K.
Source:
Journal of physical chemistry 2021 v.125 no.21 pp. 11756-11764
ISSN:
1932-7455
Subject:
lead,   etc   ; cations; physical chemistry;     Show all 3 Subjects
Abstract:
... Following on the heels of the remarkable lead halide perovskite optoelectronic materials, interest in lead-free halide perovskites has grown rapidly in the past decade. Double perovskite halides with the general formula A₂MᴵMᴵᴵᴵX₆ (where A is a large monovalent cation in the perovskite A site, Mᴵ is a univalent metal, Mᴵᴵᴵ is a trivalent metal, and X is a halide) represent one of the promising cla ...
DOI:
10.1021/acs.jpcc.1c02870

7. ‘Viable but non‐culturable cells’ are dead

Author:
Song, Sooyeon; Wood, Thomas K.
Source:
Environmental microbiology 2021 v.23 no.5 pp. 2335-2338
ISSN:
1462-2912
Subject:
lead,   etc   ; biofilm; ribosomes; sleep;     Show all 4 Subjects
Abstract:
... Most bacteria lead lives of quiet desperation, so they sleep. By sleeping, bacteria survive ubiquitous stress, such as antibiotics, and can resuscitate to reconstitute infections. As for other nearly universal and highly regulated processes such as biofilm formation, in persistence, a small population of cells have an elegantly‐regulated pathway to become dormant. By inactivating their ribosomes, ...
DOI:
10.1111/1462-2920.15463

8. Enhanced photocatalytic properties of a chemically modified blue phosphorene

Author:
Maibam, Ashakiran; Das, Sawan Kumar; Samal, Pragnya Paramita; Krishnamurty, Sailaja
Source:
RSC advances 2021 v.11 no.22 pp. 13348-13358
ISSN:
2046-2069
Subject:
lead,   etc   ; energy; photocatalysis; sulfur;     Show all 4 Subjects
Abstract:
... It is high time to placate the peak demand for an efficient, economic and green fuel in the form of H₂ through photocatalytic water splitting. Several low dimensional materials have been explored for their photocatalytic properties on account of their surface to volume ratio. The present study illustrates the excellent photocatalytic potential of a two-dimensional material, viz. a chemically tempe ...
DOI:
10.1039/d0ra10829d

9. Time for a change in blood lead reference value for Chinese children

Author:
Li, Tao
Source:
Chemosphere 2021 v.267 pp. 128868
ISSN:
0045-6535
Subject:
lead,   etc   ; blood; childhood; China;     Show all 4 Subjects
Abstract:
... In China, the first and also the latest version of national childhood lead exposure control guidelines was issued by the National Health Commission in 2006, when the reference value of high blood lead exposure was set at 100 μg/L and lead poisoning was set at 200 μg/L. Lead exposure levels have been decreasing in China over the last few decades, with almost all blood lead concentrations in childre ...
DOI:
10.1016/j.chemosphere.2020.128868

10. Lead chlorine cluster assembled one-dimensional halide with highly efficient broadband white-light emission

Author:
Zhao, Jian-Qiang; Sun, Chen; Yue, Meng; Meng, Yan; Zhao, Xian-Mei; Zeng, Le-Ran; Chen, Guang; Yue, Cheng-Yang; Lei, Xiao-Wu
Source:
Chemical communications 2021 v.57 no.10 pp. 1218-1221
ISSN:
1364-548X
Subject:
lead,   etc   ; chlorine; white light;     Show all 3 Subjects
Abstract:
... One new type of hybrid lead halide of [DTHPE]₂Pb₃Cl₁₀ has been synthesized and characterized containing a one-dimensional (1D) wavelike [Pb₃Cl₁₀]⁴⁻ chain based on a corner-shared [Pb₃Cl₁₁] cluster. Remarkably, this cluster-based 1D chain displays intrinsic broadband white light emission with a high quantum efficiency of 19.45% exceeding those of previously reported typical two-dimensional perovski ...
DOI:
10.1039/d0cc05570k

11. Bioinspired scaffolds that sequester lead ions in physically damaged high efficiency perovskite solar cells

Author:
Mokhtar, Muhamad Z.; He, Jiangyu; Li, Menghan; Chen, Qian; Ke, Jack Chun Ren; Lewis, David J.; Thomas, Andrew G.; Spencer, Ben F.; Haque, Saif A.; Saunders, Brian R.
Source:
Chemical communications 2021 v.57 no.8 pp. 994-997
ISSN:
1364-548X
Subject:
lead,   etc   ; hydroxyapatite; porous media;     Show all 3 Subjects
Abstract:
... Hydroxyapatite nanoparticles (HAP NPs) are blended with TiO₂ NPs to prepare mixed mesoporous scaffolds which are used to prepare high efficiency perovskite solar cells (PSCs) with a best power conversion efficiency (PCE) of 20.98%. HAP not only increases the PCE but also limits the concentration of Pb released in water from intentionally broken PSCs by ion sequestration thereby potentially offerin ...
DOI:
10.1039/d0cc02957b

12. Intrinsic Valley Polarization and High-Temperature Ferroelectricity in Two-Dimensional Orthorhombic Lead Oxide

Author:
Jia, Yizhen; Luo, Fangxue; Hao, Xiamin; Meng, Qingling; Dou, Wenzhen; Zhang, Ling; Wu, Jinge; Zhai, Shuwei; Zhou, Miao
Source:
ACS applied materials & interfaces 2021 v.13 no.5 pp. 6480-6488
ISSN:
1944-8252
Subject:
lead,   etc   ; semiconductors; temperature;     Show all 3 Subjects
Abstract:
... Recent years have witnessed a surge of research in two-dimensional (2D) ferroelectric structures that may circumvent the depolarization effect in conventional perovskite oxide films. Herein, by first-principles calculations, we predict that an orthorhombic phase of lead(II) oxide, PbO, serves as a promising candidate for 2D ferroelectrics with good stability. With a semiconducting nature, 2D ferro ...
DOI:
10.1021/acsami.0c17878

13. How Deep Hole Traps Affect the Charge Dynamics and Collection in Bare and Bilayers of Methylammonium Lead Bromide

Author:
Zhao, Jiashang; Caselli, Valentina M.; Bus, Marcel; Boshuizen, Bart; Savenije, Tom J.
Source:
ACS applied materials & interfaces 2021 v.13 no.14 pp. 16309-16316
ISSN:
1944-8252
Subject:
lead; lead bromide,   etc   ; electric potential difference; iodides; photoluminescence;     Show all 5 Subjects
Abstract:
... Wide-band-gap perovskites such as methylammonium lead bromide (MAPB) are promising materials for tandem solar cells because of their potentially high open-circuit voltage, which is yet still far below the maximum limit. The relatively short charge-carrier lifetimes deduced from time-resolved photoluminescence (TRPL) measurements seem in strong contrast with the long lifetimes observed with time-re ...
DOI:
10.1021/acsami.1c00714

14. Deep levels in cesium lead bromide from native defects and hydrogen

Author:
Swift, Michael W.; Lyons, John L.
Source:
Journal of materials chemistry A 2021 v.9 no.12 pp. 7491-7495
ISSN:
2050-7496
Subject:
lead; lead bromide,   etc   ; bromine; cesium; chemistry; hydrogen; inventories;     Show all 7 Subjects
Abstract:
... Lead halide perovskites such as CsPbBr₃ have achieved widespread attention as optoelectronic materials, due in large part to their good performance despite significant defect densities. This “defect tolerance” has often been explained by hypothesizing that there is negligible trap-assisted non-radiative recombination in these materials because none of the dominant defects give rise to deep levels ...
DOI:
10.1039/d0ta11742k

15. Mixed lead source precursors for producing light absorption layers of perovskite solar cells

Author:
Xie, Honggang; Zheng, Bo; Gao, Can; Xu, Jiannan; Zhang, Jiejing; Gao, Chunxiao; Liu, Xizhe
Source:
RSC advances 2021 v.11 no.4 pp. 1976-1983
ISSN:
2046-2069
Subject:
lead; lead acetate,   etc   ; X-ray diffraction; absorption; crystallization; thiocyanates;     Show all 6 Subjects
Abstract:
... Beside the conventional perovskite precursors with lead halides as lead sources, non-halide lead sources provide additional tools for tuning the properties of perovskite layers, and lead acetate is a promising candidate for non-halide lead sources. In this work, we develop the perovskite precursor with a mixed non-halide lead source by partially replacing lead acetate with lead thiocyanate. Scanni ...
DOI:
10.1039/d0ra08077b

16. Characterization of the Ammonium Bending Vibrations in Two-Dimensional Hybrid Lead-Halide Perovskites from Raman Spectroscopy and First-Principles Calculations

Author:
Lavan, Sydney N.; Sanni, Adedayo M.; Rury, Aaron S.; Liu, Zhen-Fei
Source:
Journal of physical chemistry 2021 v.125 no.1 pp. 223-236
ISSN:
1932-7455
Subject:
lead; lead bromide,   etc   ; Raman spectroscopy; ammonium; energy; iodides; mathematical theory;     Show all 7 Subjects
Abstract:
... The facile synthesis and electronic properties of two-dimensional hybrid organic–inorganic perovskites (2D HOIPs) make these self-assembled systems an important class of energy materials. The basic building blocks of these materials include inorganic lattice frameworks that often consist of lead-halide octahedra and organic molecules possessing ammonium functional groups. Understanding the couplin ...
DOI:
10.1021/acs.jpcc.0c09621

17. A study on pyro-hydrometallurgical process for selective recovery of Pb, Sn and Sb from lead dross

Author:
Kim, Woo Jin; Seo, Sangyun; Lee, Seong Il; Kim, Dong Wan; Kim, Myong Jun
Source:
Journal of hazardous materials 2021 v.417 pp. 126071
ISSN:
0304-3894
Subject:
lead,   etc   ; hazardous waste; pH; sulfides;     Show all 4 Subjects
Abstract:
... This study is to propose a pyro-hydrometallurgical process for recovering Pb, Sn, and Sb from lead dross (LD), incorporating stages of roasting, leaching, and precipitation. The LD, containing 67.2% of Pb, 4.0% of Sn, and 1.4% of Sb, was first roasted at 750 °C for 2 h to oxidise the sulphide metals. Approximately 90% of Pb was oxidised from the first roasting. The LD was second roasted by mixing ...
DOI:
10.1016/j.jhazmat.2021.126071

18. Spin-polarized gate-tuned transport property of a four-terminal MoS2 device: a theoretical study

Author:
Yu, Hong; Shang, Yan; Pei, Lei; Zhang, Guiling; Yan, Hong
Source:
Journal of materials science 2021 v.56 no.20 pp. 11847-11865
ISSN:
0022-2461
Subject:
lead,   etc   ; density functional theory; nanowires;     Show all 3 Subjects
Abstract:
... The transport property of a four-terminal MoS₂NR/V₇(Bz)₈ device is computed within the framework of density functional theory combined with the nonequilibrium Green’s function (NEGF) technique. This device is constructed by a MoS₂ nanoribbon (MoS₂NR) as the source-to-drain channel and a spin-polarized V₇(Bz)₈ nanowire grafted on the MoS₂NR surface as the double gate channel, where the four termina ...
DOI:
10.1007/s10853-021-06046-2

19. The impact of sampling approach and daily water usage on lead levels measured at the tap

Author:
Lytle, Darren A.; Formal, Casey; Cahalan, Kelly; Muhlen, Christy; Triantafyllidou, Simoni
Source:
Water research 2021 v.197 pp. 117071
ISSN:
0043-1354
Subject:
lead,   etc   ; research; water; water utilization;     Show all 4 Subjects
Abstract:
... There are many sampling approaches available for lead (Pb) in drinking water. Selecting the best approach for its intended use is critical. The objective of this work was to compare water Pb levels collected by multiple sampling approaches from a model home plumbing system (HPS) that included an old Pb service line (LSL), as a function of daily water usage. Specifically, flushed, direct LSL, seque ...
DOI:
10.1016/j.watres.2021.117071

20. Beauty of the Beast: Beauty as an important dimension in the moral standing of animals

Author:
Klebl, Christoph; Luo, Yin; Tan, Nicholas Poh-Jie; Ping Ern, Judah Teo; Bastian, Brock
Source:
Journal of environmental psychology 2021 v.75 pp. 101624
ISSN:
0272-4944
Subject:
lead,   etc   ; aesthetics; decline; people; psychology;     Show all 5 Subjects
Abstract:
... Conservationists have sought to identify avenues through which to gain public support for efforts to halt the accelerating decline in animal diversity. Previous research has identified perceived internal qualities of animals that lead people to view them as deserving of protection for their own sake; that is, increase their moral standing. In two studies, we found that perceived beauty is an exter ...
DOI:
10.1016/j.jenvp.2021.101624