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https://www.readbyqxmd.com/read/28782932/visualization-of-colloidal-nanocrystal-formation-and-electrode-electrolyte-interfaces-in-liquids-using-tem
#1
Zhiyuan Zeng, Wenjing Zheng, Haimei Zheng
Transmission electron microscopy (TEM) has become a powerful analytical tool for addressing unique scientific problems in chemical sciences as well as in materials sciences and other disciplines. There has been a lot of recent interest in the development and applications of liquid phase environmental TEM. In this Account, we review the development and applications of liquid cell TEM for the study of dynamic phenomena at liquid-solid interfaces, focusing on two areas: (1) nucleation, growth, and self-assembly of colloidal nanocrystals and (2) electrode-electrolyte interfaces during charge and discharge processes...
August 7, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28780550/improving-discharge-care-the-potential-of-a-new-organisational-intervention-to-improve-discharge-after-hospitalisation-for-acute-stroke-a-controlled-before-after-pilot-study
#2
Dominique A Cadilhac, Nadine E Andrew, Enna Stroil Salama, Kelvin Hill, Sandy Middleton, Eleanor Horton, Ian Meade, Sarah Kuhle, Mark R Nelson, Rohan Grimley
OBJECTIVE: Provision of a discharge care plan and prevention therapies is often suboptimal. Our objective was to design and pilot test an interdisciplinary, organisational intervention to improve discharge care using stroke as the case study using a mixed-methods, controlled before-after observational study design. SETTING: Acute care public hospitals in Queensland, Australia (n=15). The 15 hospitals were ranked against a benchmark based on a composite outcome of three discharge care processes...
August 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/28772588/experimental-study-of-thermal-runaway-process-of-18650-lithium-ion-battery
#3
Jingjing Liu, Zhirong Wang, Junhui Gong, Kai Liu, Hao Wang, Linsheng Guo
This study addresses the effects of the SOC (State of Charge) and the charging-discharging process on the thermal runaway of 18650 lithium-ion batteries. A series of experiments were conducted on an electric heating and testing apparatus. The experimental results indicate that 6 W is the critical heating power for 40% SOC. With a 20 W constant heating rate, the thermal runaway initial temperature of the lithium-ion battery decreases with the increasing SOC. The final thermal runaway temperature increases with the SOC when the SOC is lower than 80%...
February 25, 2017: Materials
https://www.readbyqxmd.com/read/28763768/electrochemical-selective-ion-separation-in-capacitive-deionization-with-sodium-manganese-oxide
#4
Seonghwan Kim, Hansun Yoon, Dongyoon Shin, Jaehan Lee, Jeyong Yoon
Electrochemical selective ion separation via capacitive deionization, for example, separation of lithium resource from brine, using lithium ion batteries is proposed and demonstrated to have the potential for separating specific ions selectively from a solution containing diverse ions. This separation method is of great industrial concern because of applicability in various fields such as deionization, water softening, purification, heavy metal removal, and resource recovery. Nevertheless, besides the selectivity of materials for lithium ion batteries toward Li(+), there is very little investigation on the selectivity of the materials for sodium ion batteries toward Na(+)...
July 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28751845/anmco-position-paper-hospital-discharge-planning-recommendations-and-standards
#5
Mauro Mennuni, Michele Massimo Gulizia, Gianfranco Alunni, Antonio Francesco Amico, Francesco Maria Bovenzi, Roberto Caporale, Furio Colivicchi, Andrea Di Lenarda, Giuseppe Di Tano, Sabrina Egman, Francesco Fattirolli, Domenico Gabrielli, Giovanna Geraci, Giovanni Gregorio, Gian Francesco Mureddu, Federico Nardi, Donatella Radini, Carmine Riccio, Fausto Rigo, Marco Sicuro, Stefano Urbinati, Guerrino Zuin
The hospital discharge is often poorly standardized and affected by discontinuity and fragmentation of care, putting patients at high risk of both post-discharge adverse events and early readmission. The present ANMCO document reviews the modifiable components of the hospital discharge process related to adverse events or re-hospitalizations and suggests the optimal methods for redesigning the whole discharge process. The key principles for proper hospital discharge or transfer of care acknowledge that the hospital discharge: • is not an isolated event, but a process that has to be planned as soon as possible after the admission, ensuring that the patient and the caregiver understand and contribute to the planned decisions, as equal partners; • is facilitated by a comprehensive systemic approach that begins with a multidimensional evaluation process; • must be organized by an operator who is responsible for the coordination of all phases of the hospital patient journey, involving afterward the general practitioner and transferring to them the information and responsibility at discharge; • is the result of an integrated multidisciplinary team approach; • appropriately uses the transitional and intermediate care services; • is carried out in an organized system of care and continuum of services; and • programs the passage of information to after-discharge services...
May 2017: European Heart Journal Supplements: Journal of the European Society of Cardiology
https://www.readbyqxmd.com/read/28731713/revealing-the-electrochemical-charging-mechanism-of-nanosized-li2s-by-in-situ-and-operando-x-ray-absorption-spectroscopy
#6
Liang Zhang, Dan Sun, Jun Feng, Elton J Cairns, Jinghua Guo
Lithium sulfide (Li2S) is a promising cathode material for lithium-sulfur (Li/S) cells due to its high theoretical specific capacity (1166 mAh g(-1)) and ability to pair with nonmetallic lithium anodes to avoid potential safety issues. However, when used as the cathode, a high charging voltage (∼4 V versus Li(+)/Li) is always necessary to activate Li2S in the first charge process, and the voltage profile becomes similar to that of a common sulfur electrode in the following charge processes. In this report, we have prepared an electrode of nanosphere Li2S particles and investigated its charging mechanism of the initial two charge processes by in situ and operando X-ray absorption spectroscopy...
July 25, 2017: Nano Letters
https://www.readbyqxmd.com/read/28725840/the-impact-of-revised-discharge-instructions-on-patient-satisfaction
#7
Heather Markey Waniga, Travis Gerke, Alena Shoemaker, Derek Bourgoine, Pracha Eamranond
INTRODUCTION: The impact of discharge instructions on a patient's experience is not fully understood. This research explored whether nurse- and physician-generated discharge instructions had a positive effect on patient perceptions regarding their discharge experience. METHODS: We compared Press Ganey discharge-related patient satisfaction scores for the year prior to and the year subsequent to implementing revised discharge instructions for all patients admitted to a 180-bed community-based hospital...
September 2016: Journal of patient experience
https://www.readbyqxmd.com/read/28721952/nanocoating-covalent-organic-frameworks-on-nickel-nanowires-for-greatly-enhanced-performance-supercapacitors
#8
Yang Han, Nantao Hu, Shuai Liu, Zhongyu Hou, Jiaqiang Liu, Xiaolin Hua, Zhi Yang, Liangming Wei, Lin Wang, Hao Wei
Nanocoatings of covalent organic frameworks (COFs) on nickel nanowires (NiNWs) have been designed and successfully fabricated for the first time, which showed greatly enhanced electrochemical performances for supercapacitors. The specific capacitance of electrodes based on as-fabricated COFs nanocoatings reached up to 314 F g(-1) at 50 A g(-1), which retained 74% of the specific capacitance under the current density of 2 A g(-1). The ultrahigh current density makes the charge-discharge process extremely rapid...
July 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28718620/high-performance-cathode-based-on-microporous-mo-v-bi-oxide-for-li-battery-and-investigation-by-operando-x-ray-absorption-fine-structure
#9
Zhenxin Zhang, Satoshi Ishikawa, Masaki Kikuchi, Hirofumi Yoshikawa, Qi Lian, Heng Wang, Toshiaki Ina, Akihiro Yoshida, Masahiro Sadakane, Futoshi Matsumoto, Wataru Ueda
The development of cathode-active material of Li battery is important for the current emerging energy transferring and saving problems. A stable crystalline microporous complex metal oxide based on Mo, V, and Bi is an active and suitable material for Li battery. High capacity (380 Ah/kg) and stable cycle performance are achieved. X-ray absorption near-edge structure analyses demonstrate that the original Mo(6+) and V(4+) ions are reduced to Mo(4+) and V(3+) in the discharging process, respectively, which results in a 70-electron reduction per formula...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28699944/improving-the-readability-of-pediatric-hospital-medicine-discharge-instructions
#10
Ndidi Unaka, Angela Statile, Karen Jerardi, Devesh Dahale, Joan Morris, Brianna Liberio, Ashley Jenkins, Blair Simpson, Randi Mullaney, Jodi Kelley, Michelle Durling, Jennifer Shafer, Patrick Brady
BACKGROUND: Readable discharge instructions may help caregivers understand and implement care plans following hospitalization. Many caregivers of hospitalized children, however, have limited literacy. We aimed to increase the percentage of discharge instructions written at 7th grade level or lower for hospital medicine patients from 13% to 80% in 6 months. METHODS: Quality improvement efforts targeted a 42-bed unit at the community satellite of our large, urban academic hospital...
July 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28699825/engaging-end-users-in-intervention-research-study-design
#11
Molly A Martin, Valerie G Press, Kim Erwin, Helen Margellos-Anast, Stacy Ignoffo, Kate Sheridan McMahon, Giselle Mosnaim, Jessica Ramsay, S Margaret Paik
OBJECTIVE: Coordinated Healthcare Interventions for Childhood Asthma Gaps in Outcomes (CHICAGO) Plan is a 3-arm multicenter pragmatic trial to evaluate asthma interventions in high-risk Chicago children presenting to emergency departments (ED) with asthma. A formative evaluation with end-users to provide input into the trial design and outcome instruments was conducted prior to trial initiation. METHODS: A multi-level data gathering framework from the field of design and standard qualitative methods was employed...
July 12, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28696092/synthesis-of-mesoporous-co2-doped-tio2-nanodisks-derived-from-metal-organic-frameworks-with-improved-sodium-storage-performance
#12
Zhensheng Hong, Meiling Kang, Xiaohui Chen, Kaiqiang Zhou, Zhigao Huang, Mingdeng Wei
TiO2 is a most promising anode candidate for rechargeable Na-ion batteries (NIBs) due to its appropriate working voltage, low cost and superior structural stability during chage/discharge process. Nevertheless, it suffers from intrinsically low electrical conductivity. Herein, we report an in-situ synthesis of Co2+ doped TiO2 through the thermal treatment of metal organic frameworks precursors of MIL-125(Ti)-Co as a superior anode material for NIBs. The Co2+ doped TiO2 possesses uniform nanodisk morphology, a large surface area and mesoporous structure with narrow pore distribution...
July 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28692775/yolk-shelled-c-fe3-o4-nanoboxes-as-efficient-sulfur-hosts-for-high-performance-lithium-sulfur-batteries
#13
Jiarui He, Liu Luo, Yuanfu Chen, Arumugam Manthiram
Owing to the high theoretical specific capacity (1675 mA h g(-1) ) and low cost, lithium-sulfur (Li-S) batteries offer advantages for next-generation energy storage. However, the polysulfide dissolution and low electronic conductivity of sulfur cathodes limit the practical application of Li-S batteries. To address such issues, well-designed yolk-shelled carbon@Fe3 O4 (YSC@Fe3 O4 ) nanoboxes as highly efficient sulfur hosts for Li-S batteries are reported here. With both physical entrapment by carbon shells and strong chemical interaction with Fe3 O4 cores, this unique architecture immobilizes the active material and inhibits diffusion of the polysulfide intermediates...
July 10, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28692757/2d-frameworks-of-c2-n-and-c3-n-as-new-anode-materials-for-lithium-ion-batteries
#14
Jiantie Xu, Javeed Mahmood, Yuhai Dou, Shixue Dou, Feng Li, Liming Dai, Jong-Beom Baek
Novel layered 2D frameworks (C3 N and C2 N-450) with well-defined crystal structures are explored for use as anode materials in lithium-ion batteries (LIBs) for the first time. As anode materials for LIBs, C3 N and C2 N-450 exhibit unusual electrochemical characteristics. For example, C2 N-450 (and C3 N) display high reversible capacities of 933.2 (383.3) and 40.1 (179.5) mAh g(-1) at 0.1 and 10 C, respectively. Furthermore, C3 N shows a low hypothetical voltage (≈0.15 V), efficient operating voltage window with ≈85% of full discharge capacity secured at >0...
July 10, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28691792/high-performance-li-se-batteries-enabled-by-selenium-storage-in-bottom-up-synthesized-nitrogen-doped-carbon-scaffolds
#15
Hongling Lv, Renpeng Chen, Xiaoqi Wang, Yi Hu, Yanrong Wang, Tao Chen, Lianbo Ma, Guoyin Zhu, Jia Liang, Zuoxiu Tie, Jie Liu, Zhong Jin
Selenium (Se) has great promise to serve as cathode material for rechargeable batteries because of its good conductivity and high theoretical volumetric energy density comparable to sulfur. Herein, we report the preparation of mesoporous nitrogen-doped carbon scaffolds (NCSs) to restrain selenium for advanced lithium-selenium (Li-Se) batteries. The NCSs synthesized by a bottom-up solution-phase method have graphene-like laminar structure and well-distributed mesopores. The unique architecture of NCSs can severe as conductive framework for encapsulating selenium and polyselenides, and provide sufficient pathways to facilitate ion transport...
July 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28686486/exploring-challenges-in-the-patient-s-discharge-process-from-the-internal-medicine-service-a-qualitative-study-of-patients-and-providers-perceptions
#16
Vincent Pinelli, Heather L Stuckey, Jed D Gonzalo
In hospital-based medicine units, patients have a wide range of complex medical conditions, requiring timely and accurate communication between multiple interprofessional providers at the time of discharge. Limited work has investigated the challenges in interprofessional collaboration and communication during the patient discharge process. In this study, authors qualitatively assessed the experiences of internal medicine providers and patients about roles, challenges, and potential solutions in the discharge process, with a phenomenological focus on the process of collaboration...
July 7, 2017: Journal of Interprofessional Care
https://www.readbyqxmd.com/read/28682741/beyond-hospital-discharge-mechanics-managing-the-discharge-paradox-and-bridging-the-care-chasm
#17
Heather E Canary, Victoria Wilkins
Hospital discharge processes are complex and confusing, and can detrimentally affect patients, families, and providers. This qualitative study investigated pediatric hospital discharge experiences from the perspectives of parents of children with acute and chronic health conditions, primary care providers, and hospitalists. Focus groups and interviews with parents, primary care providers, and hospitalists were used to explore discharge experiences and ideas for improvement offered by participants. Using an iterative approach to analyze data resulted in five major themes for discharge experiences: (a) discharge problems, (b) teamwork, (c) ideal discharge, (d) care chasm, and (e) discharge paradox...
July 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28671719/water-soluble-sericin-protein-enabling-stable-solid-electrolyte-interphase-for-fast-charging-high-voltage-battery-electrode
#18
Yuxin Tang, Jiyang Deng, Wenlong Li, Oleksandr I Malyi, Yanyan Zhang, Xinran Zhou, Shaowu Pan, Jiaqi Wei, Yurong Cai, Zhong Chen, Xiaodong Chen
Spinel LiNi0.5 Mn1.5 O4 (LNMO) is the most promising cathode material for achieving high energy density lithium-ion batteries attributed to its high operating voltage (≈4.75 V). However, at such high voltage, the commonly used battery electrolyte is suffered from severe oxidation, forming unstable solid-electrolyte interphase (SEI) layers. This would induce capacity fading, self-discharge, as well as inferior rate capabilities for the electrode during cycling. This work first time discovers that the electrolyte oxidation is effectively negated by introducing an electrochemically stable silk sericin protein, which is capable to stabilize the SEI layer and suppress the self-discharge behavior for LNMO...
July 3, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28661118/nanostructured-phosphorus-doped-silicon-graphite-composite-as-anode-for-high-performance-lithium-ion-batteries
#19
Shiqiang Huang, Ling-Zhi Cheong, Deyu Wang, Cai Shen
Silicon as the potential anode material for lithium-ion batteries suffers from huge volume change (up to 400%) during charging/discharging processes. Poor electrical conductivity of silicon also hinders its long-term cycling performance. Herein, we report a two-step ball milling method to prepare nanostructured P-doped Si/graphite composite. Both P-doped Si and coated graphite improved the conductivity by providing significant transport channels for lithium ions and electrons. The graphite skin is able to depress the volume expansion of Si by forming a stable SEI film...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28647320/an-integrated-aerobic-anaerobic-strategy-for-performance-enhancement-of-pseudomonas-aeruginosa-inoculated-microbial-fuel-cell
#20
Xiao-Yu Yong, Zhi-Ying Yan, Hai-Bo Shen, Jun Zhou, Xia-Yuan Wu, Li-Juan Zhang, Tao Zheng, Min Jiang, Ping Wei, Hong-Hua Jia, Yang-Chun Yong
Microbial fuel cell (MFC) is a promising device for energy generation and organic waste treatment simultaneously by electrochemically active bacteria (EAB). In this study, an integrated aerobic-anaerobic strategy was developed to improve the performance of P. aeruginosa-inoculated MFC. With an aerobic start-up and following an anaerobic discharge process, the current density of MFC reached a maximum of 99.80µA/cm(2), which was 91.6% higher than the MFC with conventional constant-anaerobic operation. Cyclic voltammetry and HPLC analysis showed that aerobic start-up significantly increased electron shuttle (pyocyanin) production (76% higher than the constant-anaerobic MFC)...
October 2017: Bioresource Technology
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