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| 1 | Optimal dietary copper requirements and relative bioavailability for weanling pigs fed either copper proteinate or tribasic copper chloride显示文摘Background: The objective of this study was to determine the effects of supplementing Cu on growth performance, Cu metabolism and Cu-related enzyme activities of weanling pigs fed diets with two different Cu sources, and to estimate optimal Cu requirements and relative bioavailability from these two sources for pigs.Methods: Weanling pigs were allocated to 14 treatments arranged factorially, including 6 added Cu levels(5, 10,20, 40, 80, 160 mg/kg), and 2 mineral sources(tribasic Cu chloride, TBCC and copper proteinate, Cu Pro), as well as one negative control(0 mg/kg added Cu level) and one maximum allowed level treatment(200 mg/kg TBCC) for the entire 38-d experiment. Growth performance, mineral status and enzyme activities were measured at the end of this study.Results: Increasing levels of Cu showed linear and quadratic responses(P < 0.01) for final BW, ADG and FCR regardless of the sources. Supplementation with TBCC(> 80 mg/kg) and Cu Pro(> 20 mg/kg) significantly decreased(P < 0.05) diarrhea incidence of weanling pigs. There were linear and quadratic increases(P < 0.01) in bile, hepatic,and intestinal Cu concentrations, fecal Cu contents, and plasma enzyme activities(alkaline phosphatase,ceruloplasmin, Cu, Zn-Superoxide dismutase(Cu/Zn SOD), and glutathione peroxidase), whereas plasma malondialdehyde decreased(P < 0.01) linearly and quadratically as dietary Cu level increased. Similarly, pigs fed Cu Pro absorbed and retained more Cu and excreted less Cu than those fed TBCC when supplemented 80 mg/kg and above. Optimal dietary Cu requirements for pigs from 28 to 66 d of age estimated based on fitted broken-line models(P < 0.05) of bile Cu, plasma Cu/Zn SOD and growth performance were 93–140 mg/kg from TBCC, and 63–98 mg/kg from Cu Pro accordingly. According to slope ratios from multiple linear regression, the bioavailability value of Cu Pro relative to TBCC(100%) was 156–263%(P < 0.01).Conclusion: The findings indicated that Cu recommendation from current NRC(5–6 mg/kg) was not sufficient to meet the high requirement of weanling pigs. Cu from Cu Pro was significantly more bioavailable to weanling pigs than TBCC in stimulating growth and enzyme activities, decreasing diarrhea frequency and fecal Cu contents to the environment. | Gang Lin Yang Guo Bing Liu Ruiguo Wang Xiaoou Su Dongyou Yu Pingli He | 2020 | Journal of Animal Science and Biotechnology2020，11，4： | 5 |
| 2 | Studies on Highly Efficient Promoters for Titanium-based Ziegler-Natta Catalyst for Ethylene Polymerization显示文摘 | Luo Hekuan Tang Ruiguo Yang Hua | | 0，，： | 1 |
| 3 | Tuning electrochemical transformation process of zeolitic imidazolate framework for efficient water oxidation activity显示文摘Metal-organic frameworks(MOFs)have been widely studied as efficient electrocatalysts for water oxidation due to their tunable structure and easy preparation.However,the rational design of MOFs-based electrocatalysts and fundamental understanding of their structural evolution during oxygen evolution reaction(OER)remain critical challenges.Here,we report a facile approach to tune the structural transformation process of the Co-based zeolitic imidazolate framework(ZIF)during the OER process by using water molecules as a vacancy promoter.The modified ZIF catalyst accelerates the structural transformation from MOF precursor to electrochemical active species and simultaneously enhances the vacancy density during the electrochemical activation process.The optimized electrocatalyst exhibits an extremely low overpotential 175 mV to deliver 10 mA cm^(-2) and superior durability(100 h)at 100 mA cm^(-2).The comprehensive characterization results reveal the structural transformation from the initial tetrahedral Co sites to cobalt oxyhydroxide(CoOOH)and the formation process of oxygen vacancies(CoOOH-Vo)at a high anodic potential.These findings represent a promising way to achieve highly active MOF-based electrocatalysts for water oxidation. | Zhanwu Lei Xu Jin Jianming Li Yang Liu Jian Liu Shuhong Jiao Ruiguo Cao | 2022 | Journal of Energy Chemistry2022，31，2： | 1 |
| 4 | Characteristics of Nitrogen Jet and Its Effect on the Bath in Slag Splashing显示文摘CharacteristicsofNitrogenJetandItsEffectontheBathinSlagSplashingYangWenyuan①,ZhengCongjie①,BaiRuiguo②,FuZhenrong②,ZhangXingli... | Yang Wenyuan Zheng Congjie Bai Ruiguo Fu Zhenrong Zhang Xingling | 1997 | Journal of Iron and Steel Research(International)1997，4，2： | 1 |
| 5 | Studies on Highly Efficient Promoters for Titanium-Based Ziegler-Natta Catalyst for Ethylene Polymerization 显示文摘 | Luo Hekuan Tang Ruiguo Yang Hua | 2000 | Appl Catal A2000，203，2： | 1 |
| 6 | Microfabricated platforms to investigate cell mechanical properties显示文摘Mechanical stimulation has been imposed on living cells using several approaches.Most early investigations were conducted on groups of cells,utilizing techniques such as substrate deformation and flow-induced shear.To investigate the properties of cells individually,many conventional techniques were utilized,such as AFM,optical traps/optical tweezers,magnetic beads,and micropipette aspiration.In specific mechanical interrogations,microelectro-mechanical systems(MEMS)have been designed to probe single cells in different interrogation modes.To exert loads on the cells,these devices often comprise piezo-electric driven actuators that attach directly to the cell or move a structure on which cells are attached.Uniaxial and biaxial pullers,micropillars,and cantilever beams are examples of MEMS devices.In this review,the methodologies to analyze single cell activity under external loads using microfabricated devices will be examined.We will focus on the mechanical interrogation in three different regimes:compression,traction,and tension,and discuss different microfabricated platforms designed for these purposes. | Amir M.Esfahani Grayson Minnick Jordan Rosenbohm Haiwei Zhai Xiaowei Jin Bahareh Tajvidi Safa Justin Brooks Ruiguo Yang | 2022 | Medicine in Novel Technology and Devices2022，，1： | 0 |
| 7 | Crossover effects of transition metal ions in high-voltage lithium metal batteries显示文摘Enhancing the cut-off voltage of high-nickel layered oxide cathodes is an efficient way to obtain higher energy density of lithiummetal batteries(LMBs).However,the phase transition of the cathode materials and the uncontrolled decomposition of the electrolytes at high voltage can lead to irreversible dissolution of transition metal ions,which might cause the crossover effects on the lithium metal anodes.Nonetheless,the mechanism and electrolyte dependence of the crossover effects for Li metal anodes are still unclear.Herein,we investigate the crossover effects between LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2)and Li-metal anode in two electrolyte systems.For ether-based electrolyte,its poor oxidation stability results in massive dissolution of transition metal ions,leading to dendrite growth on anode and rapid cells failure.Conversely,ester-based electrolyte exhibits good electrochemical performances at 4.5 V with little crossover effect.This study provides an idea for electrolyte systems selection for high-voltage LMBs,and verifies that the crossover effect should not be neglected in LMBs. | Wanxia Li Yulin Jie Yunhua Chen Ming Yang Yawei Chen Xinpeng Li Youzhang Guo Xianhui Meng Ruiguo Cao Shuhong Jiao | 2023 | Nano Research2023，16，6： | 0 |
| 8 | Pomegranate-like C_(60)@cobalt/nitrogen-codoped porous carbon for high-performance oxygen reduction reaction and lithium-sulfur battery显示文摘Porous carbon materials play essential roles in electrocatalysis and electrochemical energy storage.It is of significant importance to rationally design and tune their porous structure and active sites for achieving high electrochemical activity and stability.Herein,we develop a novel approach to tune the morphology of porous carbon materials(PCM)by embedding fullerene C_(60),achieving improved performance of oxygen reduction reaction(ORR)and lithium-sulfur(Li-S)battery.Owing to the strong interaction between C_(60)and imidazole moieties,pomegranate-like hybrid of Ow-embedded zeolitic imidazolate framework(ZIF-67)precursor is synthesized,which is further pyrolyzed to form C_(60)-embedded cobalt/nitrogen-codoped porous carbon materials(abbreviated as C_(60)@Co-N-PCM).Remarkably,the unique structure of C_(60)@Co-N-PCM offers excellent ORR electrocatalytic activity and stability in alkaline solutions,outperforming the commercial Pt/C(20 wt.%)catalyst.Besides,C_(60)@Co-N-PCM as a novel cathode delivers a high specific capacity of-900 mAh·g^(-1) at 0.2 C rate in Li-S batteries,which is superior to the pristine ZIF-67-derived PCM without embedding C_(60). | Jianhua Wu Shiyang Wang Zhanwu Lei Runnan Guan Muqing Chen Pingwu Du Yalin Lu Ruiguo Cao Shangfeng Yang | 2021 | Nano Research2021，14，8： | 0 |
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