检索结果-南通市图书馆

Pseudocapacitive charge Storage in Thin Nanobelts

Advanced Fiber Materials 2019年第3期1卷 205-213页

作者： Ria Kunwar Midhun Harilal Syam G.Krishnan Bhupender pal Izan Izwan Misnon c.R.Mariappan Fabian I.Ezema Hendry Izaac Elim chun-chen Yang Rajan Jose Nanostructured Renewable Energy Materials Laboratory Faculty of Industrial Sciences and TechnologyUniversiti Malaysia Pahang26300 KuantanPahangMalaysia Department of Physics National Institute of TechnologyKurukshetraHaryana 136119India Department of Physics and Astronomy University of NigeriaNsukkaNigeria Department of Physics University of PattimuraAmbonIndonesia Battery Research centre of Green Energy Ming Chi University of TechnologyNew TaipeiTaiwan

This article reports that extremely thin nanobelts(thickness~10 nm)exhibit pseudocapacitive(Pc)charge storage in the asymmetric supercapacitor(ASc)configuration,while show battery-type charge storage in their single *** types of nanobelts,***-co_(3)O_(4) hybrid and spinal-type Nico_(2)O_(4),developed by electrospinning technique are used in this *** charge storage behaviour of the nanobelts is benchmarked against their binary metal oxide nanowires,i.e.,NiO and co_(3)O_(4),as well as a hybrid of similar chemistry,cuO-co_(3)O_(4).The nanobelts have thickness of~10 nm and width~200 nm,whereas the nanowires have diameter of~100 *** differences in charge storage behaviours are observed in NiO-co_(3)O_(4) hybrid nanobelts based AScs compared to those fabricated using the other materials-the former showed capacitive behav-iour whereas the others revealed battery-type discharge *** of pseudocapacitance in nanobelts based AScs is shown to arise from their nanobelts morphology with thickness less than typical electron diffusion lengths(~20 nm).Among all the five type of devices fabricated,the NiO-co_(3)O_(4) hybrid AScs exhibited the highest specific energy,specific power and cycling stability.

关键词： Battery-supercapacitor hybrid devices Energy storage materials Hybrid materials

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Doubled Haploid Production Using an Improved Anther culture Protocol for Sorghum[Sorghum bicolor(L.)Moench]

引用

Phyton-International Journal of Experimental Botany 2021年第2期90卷 475-487页

作者： Paul chege Erzsébet Kiss csaba Lantos Andrea palágyi János Pauk cereal Research Non-profit Ltd. Alsókikötősor 9Szeged6726Hungary Doctoral School of Plant Science Szent István UniversityGödöllőH2103Hungary

Sorghum[Sorghum bicolor(L.)Moench]can benefit from accelerated breeding and release of improved varieties through doubled haploid *** technology has been used in speeding up the breeding of other major cereals such as wheat,maize and rice,for which generally widely applied optimised protocols exist.A reproducible protocol for the crop,that can overcome genotype dependency and other species-specific challenges such as phenolic exudation is however *** study aimed at sorghum doubled haploids production thereby contributing to the development of an improved *** the 28 hybrid genotypes,both F1 registered-and experimental hybrids involved,this study successfully produced haploids from five genotypes and subsequently,four confirmed doubled-haploid lines on W14mf medium or its modification with 1.0 gl^(-1)L-proline,1.0 gl^(-1)L-asparagine and 1.0 gl^(-1)KH_(2)PO_(4).Medium 190-2cu was used for regeneration and rooting,which occurred successfully,if the calli were transferred on to it less than 7 days after induction,and temperature was maintained at 25°c under light *** dependency was not wholly overcome;however,sorghum’s high tillering ability and abiotic stress tolerance were observed to contribute to attainment of haploid *** diploids producing seeds at rates of upto 80.5%were obtained,therefore eliminating the need for colchicine duplication.

关键词： In vitro androgenesis doubled-haploid sorghum anther-culture breeding

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhanced electrical conductivity in Zr-Doped(La_(0.7)Ba_(0.3))(Mn_(0.5)Fe_(0.5))O_(3)solid solutions

引用

Journal of Advanced Dielectrics 2020年第6期10卷 61-68页

作者： Yogesh Kumar Jaswinder pal Parambir Singh Malhi Rakesh Kumar cT University Sidhwan Khurd LudhianaPunjab 142024India Department of Physics Baba Farid College(Affiliated to Punjabi UniversityPatiala)BathindaPunjab 151001India Department of chemistry Guru Nanak Dev University AmritsarPunjab 143005India Ludhiana Group of colleges Chokimann LudhianaPunjab 142001India

The perovskite(La_(0.7)Ba_(0.3))(Mn_(0.5)Fe_(0.5))_(1−x)Zr_(x)O_(3),where x=0.1,0.2 and 0.3,ceramics were synthesized by solid-state reaction *** introductory structural studies were followed through by X-ray diffraction technique and the results have disclosed that all the samples were crystallized into an isolated *** Zr substitution in the resulting solid solutions increases the electrical conductivity and the maximum value of ac conductivity has been found to be~118.8 ***^(−1)for x=0.3 at 200°c(at 1 MHz).The frequency dependence of ac conductivity data follows Jonscher’s power *** variation of the exponent n versus temperature follows the nonoverlapping small polaron tunneling(NSPT)*** dielectric relaxation has been observed to be of non-Debye nature for all measuring temperatures(50-200°c).The impedance spectroscopy reveals that all the samples exhibit negative temperature coefficient of resistance(NTcR)*** prepared samples(for x>1)are supposed to be suitable for cathode materials in SOFcs.

关键词： SOFc perovskite X-Ray Diffraction(XRD) ac conductivity dielectric

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Lycopene modulates cellular proliferation, glycolysis and hepatic ultrastructure during hepatocellular carcinoma

引用

World Journal of Hepatology 2016年第29期8卷 1222-1233页

作者： Prachi Gupta Nisha Bhatia Mohinder pal Bansal Ashwani Koul Department of Biophysics Basic Medical Sciences Block Ⅱ Panjab University

AIMTo investigate the effect of lycopene extracted from tomatoes (LycT) on ultrastructure, glycolytic enzymes, cell proliferation markers and hypoxia during N-Nitrosodiethylamine (NDEA)-induced hepatocarcinogenesis. METHODSFemale BALB/c mice were randomly divided into four groups: The control, NDEA (200 mg NDEA/kg b.w. given i.p.), LycT (5 mg/kg b.w. given orally on alternate days) and LycT + NDEA group. The mRNA and protein expression of various cell proliferation markers (PcNA, cyclin D1, and p21) were assessed by reverse transcription-polymerase chain reaction and enzyme linked immunosorbent assay, respectively. The ultrastructure of hepatic tissue was analyzed using scanning and transmission electron microscopy. The enzymatic activity of glycolytic enzymes was estimated using standardized protocols, while glucose-6-phosphate dehydrogenase activity level was estimated using a kit obtained from Reckon Diagnostic P. Ltd. (India). RESULTSUncontrolled proliferation in the liver of NDEA (P ≤ 0.001) mice was evident from the high expression of cell-proliferation associated genes (PcNA, cyclin D1, and p21) when compared to control and LycT mice. In addition, enhanced activities of hexokinase, phosphoglucoisomerase, aldolase, glucose-6-phosphate dehydrogenase and hypoxia-inducible factor-1α were observed in NDEA mice as compared to control (P ≤ 0.001) and LycT (P ≤ 0.001) mice. The alterations in hepatic ultrastructure observed in the NDEA group correlated with the changes in the above parameters. LycT pre-treatment in NDEA-challenged mice ameliorated the investigated pathways disrupted by NDEA treatment. Moreover, hepatic electron micrographs from the LycT + NDEA group showed increased macrophages, apoptotic bodies and well-differentiated hepatocellular carcinoma (Hcc) in comparison to undifferentiated Hcc as observed in the NDEA treated group. cONcLUSIONThis study demonstrates that dietary supplementation with LycT has a multidimensional role in preventing Hcc de

关键词： Hepatocellular carcinoma Ultrastructure Hypoxia cell proliferation Lycopene Glycolysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dielectric relaxation and conduction mechanism in Aurivillius ceramic Bi_(5)Ti_(3)FeO_(15)

引用

International Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 1063-1071页

作者： Rasmita Jena K.chandrakanta P.pal Md.F.Abdullah S.D.Kaushik A.K.Singh Department of Physics and Astronomy National Institute of Technology RourkelaRourkela-769008OdishaIndia UGc-DAE consortium for Scientific Research Mumbai centre BARCMumbai-400085India

For this study,we synthesized Aurivillius Bi_(5)Ti_(3)FeO_(15) ceramic using the generic solid-state reaction route and then performed roomtemperature X-ray diffraction to confirm that the compound had a single phase with no *** surface morphology of the prepared sample was observed to contain microstructural grains approximately 0.2–2μm in *** dielectric properties of the sample were determined as a function of frequency in a range of approximately 100 Hz to 1 MHz at various temperatures(303 K≤T≤773 K).Nyquist plots of the impedance data were found to exhibit a semi-circular arc in the high-temperature region,which is explained by the equivalent electrical circuit(R_(1)c_(1))(R_(2)Qc_(2)),where R_(1) and R_(2) represent the resistances associated with the grains and grain boundaries,respectively,c_(1) and c_(2) are the respective capacitances,and Q is the constant phase element(cPE),which accounts for non-Debye type of *** results indicate that both the resistance and capacitance of the grain boundaries are more prominent than those of the *** alternating current(ac)conductivity data were analyzed based on the Jonscher universal power law,which indicated that the conduction process is dominated by the hopping *** calculated activation energies of the relaxation and conduction processes were very similar(0.32 to 0.53 eV),from which we conclude that the same type of charge carriers are involved in both processes.

关键词： Nyquist plot impedance spectroscopy activation energy ac conductivity hopping

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interactions between lead(Ⅱ) ions and dissolved organic matter derived from organic fertilizers incubated in the field

引用

Journal of Environmental Sciences 2022年第11期34卷 77-89页

作者： Long chen Boling Li Zhipeng Wu Qingjie Zhao Qiuyue Wang Hailong Wang Bhupinder pal Singh Weidong Wu chuanliang Fu college of Tropical crops Hainan UniversityHaikou 570228China School of Environmental and chemical Engineering Foshan UniversityFoshan 528000China Department of Primary Industries Elizabeth Macarthur Agricultural InstituteMenangleNSW 2568Australia Institute of Agricultural Environment and Soil Hainan Academy of Agricultural SciencesHaikou 571100China Key Laboratory of Arable Land conservation of Hainan Province Haikou 571100China

This work was to study composition characteristics and the subsequent effect on the lead(Pb) binding properties of dissolved organic matter(DOM) derived from seaweed-based(SWOF) and chicken manure organic fertilizers(cMOF) during a one-year field incubation experiment using the excitation-emission matrix-parallel factor(EEM-PARAFAc) and twodimensional correlation spectroscopy(2DcOS) analysis. Results showed that high aromatic and hydrophobic fluorescent substances were enriched in cMOF-derived DOM and SWOFderived DOM and enhanced over time. And phenolic groups in the fulvic-like substances for SWOF-derived DOM and carboxyl groups in the humic-like substances for cMOF-derived DOM had the fastest responses over time, respectively. Moreover, both non-fluorescent polysaccharides and fluorescent humic-like substances or fulvic-like substances with aromatic(c=c) groups first participated in the binding process of Pb to SWOF-derived DOM on day 0 and 180 during the lead binding process. In contrast, humic-like substances associated with aromatic(c=c) and phenolic groups gave a faster response to Pb binding on day 360. Regarding cMOF-derived DOM, the fulvic-like substances associated with aromatic(c=c) and carboxylic groups displayed a faster response to Pb ions on day 0. Nonetheless,polysaccharides and humic-like associated with phenolic groups had a faster response on days 180 and 360. It is noteworthy that the polysaccharides, which participated in Pb binding to cMOF-derived DOM, posed a higher risk of Pb in the environment after 360 days. Therefore, these findings gave new insights into the long-term applications of commercial organic fertilizers for the amendment of soil.

关键词： DOM commercial organic fertilizer Parallel factor analysis Two-dimensional correlation spectroscopy Lead(Pb)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of interface on mid-infrared photothermal response of MoS2 thin film grown by pulsed laser deposition

引用

Nano Research 2017年第10期10卷 3571-3584页

作者： Ankur Goswami Priyesh Dhandaria Soupitak pal Ryan McGee Faheem Khan Zeljka Antic Ravi Gaikwad Kovur Prashanthi Thomas Thundat Department of chemical and Materials Engineering University of Alberta Edmonton T6G 1H9 Canada Department of chemical Engineering University of California Santa Barbara 93106-5070 USA

This study reports on the mid-infrared （mid-IR） photothermal response of multilayer MoS2 thin films grown on crystalline （p-type silicon and c-axis- oriented single crystal sapphire） and amorphous （Si/SiO2 and Si/SiN） substrates by pulsed laser deposition （PLD）. The photothermal response of the MoS2 films is measured as the changes in the resistance of the MoS2 films when irradiated with a mid-IR （7 to 8.2 μm） source. We show that enhancing the temperature coefficient of resistance （TcR） of the MoS2 thin films is possible by controlling the film-substrate interface through a proper choice of substrate and growth conditions. The thin films grown by PLD are characterized using X-ray diffraction, Raman, atomic force microscopy, X-ray photoelectron microscopy, and transmission electron microscopy. The high-resolution transmission electron microscopy （HRTEM） images show that the MoS2 films grow on sapphire substrates in a layer-by-layer manner with misfit dislocations. The layer growth morphology is disrupted when the films are grown on substrates with a diamond cubic structure （e.g., silicon） because of twin growth formation. The growth morphology on amorphous substrates, such as Si/SiO2 or Si/SiN, is very different. The PLD-grown MoS2 films on silicon show higher TcR （-2.9% K^-1 at 296 K）, higher mid-IR sensitivity （△R/R = 5.2%）, and higher responsivity （8.7 V·W^-1） compared to both the PLD-grown films on other substrates and the mechanically exfoliated MoS2 flakes transferred to different substrates.

关键词： MoS2 pulsed laser deposition phototherrnal effect infrared (IR) detector interface

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

TT virus and hepatitis G virus infections in Korean blood donors and patients with chronic liver disease

引用

World Journal of Gastroenterology 2003年第4期9卷 741-744页

作者： Mee Juhng Jeon Jong Hee Shin Soon pal Suh Young chai Lim Dong Wook Ryang Division of Medical Research Kwangju-Chonnan Red Cross Blood CenterChonnam National UniversityKwangju Republic of Korea Department of clinical Pathology Chonnam National UniversityKwangju Republic of Korea Research Institute of Medical SciencesChonnam Nationa UniversityKwangjuRepublic of Korea Department of Pharmacology Medical SchoolChonnam National UniversityKwangjuRepublic of Korea Research Institute of Medical SciencesChonnam National UniversityKwangjuRepublic of Korea Department of clinical Pathology Chonnam National UniversityKwangjuRepublic of Korea Research Institute of Medical Scienceschonnam National UniversityKwangjuRepublic of Korea

AIM:To determine the prevalences of TTV and HGV infections among blood donors and patients with chronic liver disease in Korea,to investigate the association of TTV and HGV infections with blood transfusion,and to assess the correlation between TTV and HGV viremia and hepatic damage. METHODS:A total of 391 serum samples were examined in this *** were obtained from healthy blood donors(n=110),hepatitis B surface antigen(HBsAg)-positive donors(n=112),anti-hepatitis c virus(anti-HcV)-positive donors(n=69),patients with type B chronic liver disease (n=81),and patients with type c chronic liver disease(n=19). Trv DNA was detected using the hemi-nested *** RNA was tested using RT-PcR.A history of blood transfusion and serum levels of alanine aminotransferase(ALT)and aspartate aminotransferase(AST)were also determined. RESULTS:TTV DNA was detected in 8.2%of healthy blood donors,16.1%of HBsAg-positive donors,20.3%of anti- HcV-positive donors,21.0%of patients with type B chronic liver disease,and 21.1%of patients with type c chronic liver *** RNA was detected in 1.8%of healthy blood donors,1.8%of HBsAg-positive donors,17.4%of anti-HcV-positive donors,13.6%of patients with type B chronic liver disease,and 10.5%of patients with type c chronic liver *** prevalence of TTV and HGV infections in HBV- or HcV-positive donors and patients was significantly higher than in healthy blood donors(Pcept for the detection rate of HGV in HBsAg-positive donors which was the same as for healthy *** was a history of transfusion in 66.7%of TTV DNA-positive patients and 76.9%of HGV RNA-positive patients(Pcant increase in serum ALT and AST was detected in the TTV or HGV-positive donors and patients. cONcLUSION:TTV and HGV infections are more frequently found in donors and patients infected with HBV or HcV than in healthy blood ***,there is no significant association between TTV or HGV infections and liver injury.

关键词： Blood Donors Blood Transfusion chronic Disease DNA Virus Infections DNA, Viral Flaviviridae Infections GB virus c purification Hepatitis B Surface Antigens Hepatitis, Viral, Human Korea Liver Diseases Polymerase chain Reaction Reference Values Reverse Transcriptase Polymerase chain Reaction Torque teno virus

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

comparative evaluation of physico-chemical characteristics of biopolyesters P（3HB） and P（3HB-co-3HV） produced by endophytic Bacillus cereus RcL 02

引用

Frontiers in Biology 2018年第4期13卷 297-308页

作者： Ritupama Das Nayan Ranjan Saha Arundhati pal Dipankar chattopadhyay Amal Kanti Paul Microbiology Laboratory Department of Botany University of Calcutta 35 Ballygunge Circular Road Kolkata 700019 West Bengal India Department of Polymer Science and Technology University of Calcutta 92 A. P. C. Road KoIkata 700009 West Bengal India Department of Botany Serampore College 9 William Carey Road Serampore Hooghly 712201 West Bengal India

BAcKGROUND： Bacteria endogenously residing within the plant tissues have attracted significant attention for production of biopolyester, polyhydroxyalkanoates （PHAs）. Bacillus cereus RcL 02 （Mcc 3436）, a leaf endophyte of oleaginous plant Ricinus communis L. accumulates 81% poly（3-hydroxybutyrate） [P（3HB）] of its cell dry biomass when grown in mineral salts （MS） medium. METHODS： The copolymer production efficiency of B. cereus RcL 02 was evaluated in valeric acid supplemented MS medium under biphasic cultivation condition. The copolymer so produced has been compared with the P（3HB） isolated from RcL 02 in terms of thermal, mechanical and chemical properties. RESULTS： Valeric acid supplementation as co-substrate in the medium has led to the production of copolymer of 3- hydroxybutyrate （3HB） and 3-hydroxyvalerate （3HV） [P（3HB-co-3HV）] with 14.6 mol% 3HV. The identity of the polymers has been confirmed by X-ray diffraction （XRD） analysis, Fourier transform infrared （FTIR） and nuclear magnetic resonance （NMR） spectroscopic studies. Thermogravimetric analysis （TGA） revealed that P（3HB） and P（3HB-co-3HV） films degraded at 278.66℃ and 273.49℃, respectively. The P（3HB-co-3HV） showed lower melting temperature （165.03℃） compared to P （3HB）（170.74℃） according to differential scanning calorimetry （DSc）. Incorporation of 3HV monomers decreased the tensile strength （21.52 MPa）, tensile modulus （0.93 GPa）, storage modulus （E＇）（0.99 GPa） and increased % elongation at break （12.2%） of the copolyester. However, P（3HB） showed better barrier properties with lower water vapor transmission rate （WVTR） of 0.55 g-mil/100 in2/24 h. cONcLUSION： These findings emphasized exploration of endophytic bacterial strain （RcL 02） to produce biodegradable polyesters which might have significant potential for industrial application.

关键词： poly(3-hydroxybutyrate) poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable polyester Bacillus cereus endophytic bacteria

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hypoxia-inducible factor 2α is a negative regulator of osteoblastogenesis and bone mass accrual

引用

Bone Research 2019年第1期7卷 91-104页

作者： christophe Merceron Kavitha Ranganathan Elizabeth Wang Zachary Tata shreya Makkapati Mohd Parvez Khan Laura Mangiavini Angela Qing Yao Laura castellini Benjamin Levi Amato J.Giaccia Ernestina Schipani Department of Orthopaedic Surgery School of MedicineUniversity of MichiganAnn ArborMIUSA Division of Plastic and Reconstructive Surgery Department of SurgeryUniversity of MichiganAnn ArborMIUSA Department of Radiation Oncology Stanford University Medical SchoolStanfordCAUSA

Osteoblasts,which are the bone-forming cells,operate in a hypoxic *** transcription factors hypoxia-inducible factor-1α(HIF1)and HIF2 are key mediators of the cellular response to *** are expressed in ***1 is known to be a positive regulator of bone ***,the role of HIF2 in the control osteoblast biology is still poorly *** this study,we used mouse genetics to demonstrate that HIF2 is an inhibitor of osteoblastogenesis and bone mass ***,we provided evidence that HIF2 impairs osteoblast differentiation at least in part,by upregulating the transcription factor *** findings constitute a paradigm shift,as activation of the hypoxia-signaling pathway has traditionally been associated with increased bone formation through *** HIF2 could thus represent a therapeutic approach for the treatment of the low bone mass observed in chronic diseases,osteoporosis,or aging.

关键词： is cells has

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：