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Estimation of Nitrogen Fertilizer Use Efficiency in Dryland Agroecosystem

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Agricultural Sciences in China 2001年第1期 89-94页

作者： LI Shi-qing LI Sheng-xiu College of Resources and Environmental Sciences Northwest Science and Technology University of Agriculture and Forestry Yangling Shaanxi 712100 College of Resources and Environmental Sciences Northwest Science and Technology University of Agriculture and Forestry Yangling Shaanxi 712100

A field trial was carried out to study the nitrogen fertilizer recovery by four crops in succession in manurial loess soil in Yangling. The results showed that the nitrogen fertilizer not only had the significant effects on the first crop , but also had longer residual effects, even on the fourth crop. The average apparent nitrogen fertilizer recovery by the first crop was 31.7%, and the accumulative nitrogen recovery by the 4 crops was high as 62.3%, and the latter was double as the former. It is quite clear that the nitrogen fertilizer recovery by the first crop was not reliable for estimating the nitrogen fertilizer unless the residual effect of nitrogen fertilizer was included.

关键词： Dry farming Ecological systen of farmland Nitrogen fertilizer recovery Residual effect

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建国以来中国高粱发展历程及发展趋势

山西农业科学 2002年第3期30卷 20-24页

作者：吕富堂韩爱清杜秀兰张福耀李团银晋中市农业局山西晋中030600 山西省农业科学院高粱研究所山西晋中030600

高粱以其高产、抗旱、耐瘠、耐涝、耐盐碱的特性及秆、穗的多种用途 ,历史上一直是中国北方人民赖以生活的重要作物 ,已有 5 0 0 0年的栽培历史。 2 0世纪初至今 ,中国高粱生产大体经过了自然品种利用、杂种优势利用及栽培目的转型三个... 详细信息

高粱以其高产、抗旱、耐瘠、耐涝、耐盐碱的特性及秆、穗的多种用途 ,历史上一直是中国北方人民赖以生活的重要作物 ,已有 5 0 0 0年的栽培历史。 2 0世纪初至今 ,中国高粱生产大体经过了自然品种利用、杂种优势利用及栽培目的转型三个阶段。中国的高粱品种改良始于 2 0世纪初叶 ,当时仅有少数农业科研和教学单位进行高粱品种的收集、保存和研究工作。 5 0年代以后 ,全国各科研单位在系统选育新品种的基础上普遍开展杂交育种工作 ,育成不少新品种在生产上大面积推广利用。 80年代是中国高粱育种全面发展时期 ,同时也是高粱生产的转型期 ,育种目标逐步向专用型调整 ,酿造、饲用等专用高粱品种相继问世和推广 ,对酿造业和畜牧业的发展产生了积极的作用。

关键词：高粱生产育种中国建国后发展历程发展趋势

Association of Urinary Strontium Levels with Pregnancy-induced Hypertension

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Current Medical Science 2021年第3期41卷 535-541页

作者： Yi TANG Wei XIA Shun-qing XU Hong-xiu LIU Yuan-yuan LI Key Laboratory of Environment and Health(HUST) Ministry of Education&Ministry of Environmental Protectionand State Key Laboratory of Environmental Health(Incubation)School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Pregnancy-induced hypertension(PIH),including gestational hypertension and preeclampsia,accounts for the majority of maternal and perinatal morbidity and ***(Sr)has been recently associated with preeclampsia in a small group of women;however,the role of Sr in PIH is not fully understood and warrants further *** this study,we examined the association between urinary Sr levels and PIH,and assessed the effect of maternal age on the *** Sr concentrations were measured in 5423 pregnant women before delivery by inductively coupled plasma mass spectrometry(ICP-MS).Logistic regression analysis adjusting for potential confounders was applied to explore the association between Sr and PIH,and to evaluate the Sr-PIH relationship stratified by maternal *** the participants,200(3.83%)women were diagnosed with *** with non-PIH women,women who developed PIH had lower urinary Sr concentrations(131.26 us.174.98μg/L creatinine,P<0.01).With the natural log-transformed urinary creatinine-standardized Sr concentrations increasing,the risk of PIH decreased significantly[adjusted OR=0.60(95%CI:0.51,0.72)].Furthermore,the significant association of Sr with PIH was found among women under 35 years(P<0.01).Our finding suggested that Sr may play a potential protective role in the pathogenesis of PIH,especially among young pregnant women under 35 years old.

关键词： strontium pregnancy hypertension maternal age trace elements

Influences of dexmedetomidine on stress responses and postoperative cognitive and coagulation functions in patients undergoing radical gastrectomy under general anesthesia

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World Journal of Gastrointestinal Surgery 2023年第6期15卷 1169-1177页

作者： Xiang-Fei Ma Shi-Jia Lv Shen-Qiao Wei Bing-Rong Mao xiu-Xia Zhao Xiao-qing Jiang Fei Zeng Xue-Ke du Department of Anesthesiology The Second Affiliated Hospital of Guangxi Medical UniversityNanning 530007Guangxi Zhuang Autonomous RegionChina

BACKGROUND Radical gastrectomy(RG)is commonly used in the treatment of patients with gastric cancer(GC),but this procedure may lead to stress responses,postoperative cognitive dysfunction,and blood coagulation abnormalities in *** To investigate the influences of dexmedetomidine(DEX)on stress responses and postoperative cognitive and coagulation functions in patients undergoing RG under general anesthesia(GA).METHODS One hundred and two patients undergoing RG for GC under GA from February 2020 to February 2022 were retrospectively *** these,50 patients had received conventional anesthesia intervention[control group(CG)]and 52 patients had received DEX in addition to routine anesthesia intervention[observation group(OG)].Inflammatory factor(IFs;tumor necrosis factor-α,TNF-α;interleukin-6,IL-6),stress responses(cortisol,Cor;adrenocorticotropic hormone,ACTH),cognitive function(CF;Mini-Mental State Examination,MMSE),neurological function(neuron-specific enolase,NSE;S100 calciumbinding protein B,S100B),and coagulation function(prothrombin time,PT;thromboxane B2,TXB2;fibrinogen,FIB)were compared between the two groups before surgery(T0),as well as at 6 h(T1)and 24 h(T2)after *** Compared with T0,TNF-α,IL-6,Cor,ACTH,NSE,S100B,PT,TXB2,and FIB showed a significant increase in both groups at T1 and T2,but with even lower levels in OG vs *** groups showed a significant reduction in the MMSE score at T1 and T2 compared with T0,but the MMSE score was notably higher in OG compared with *** In addition to a potent inhibitory effect on postoperative IFs and stress responses in GC patients undergoing RG under GA,DEX may also alleviate the coagulation dysfunction and improve the postoperative CF of these patients.

关键词： Dexmedetomidine Radical gastrectomy General anesthesia Inflammatory factors Stress responses

Effects of soil moisture and light intensity on ecophysiological characteristics of Amorpha fruticosa seedlings

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Journal of Forestry Research 2013年第2期24卷 293-300页

作者： ZHANG xiu-ru TAN Xiang-feng WANG Ren-qing XU Nan-nan GUO Wei-hua Institute of Ecology and Biodiversity College of Life Sciences Shandong University Clinical College of Tianjin Medical University

We investigated the combined effects of soil moisture and light intensity on the growth, development and ecophysiological characteristics of one-year old Amorpha fruticosa seedlings. Soil moisture and light intensity influenced the ecophysiological characteristics of Amorpha fruticosa seedlings. Soil moisture resulted in the decreases of growth rate, individual size, net photosynthetic rate, transpiration rate, leaf water loss rate （WLR）, and biomass accumulation of plant parts, and led to increased leaf water saturation deficit （WSD）. Under water stress, more photosynthetic products were allocated to root growth. With decreasing light intensity, net photosynthetic rate, transpiration rate, chla/b, water saturation deficit, water use efficiency, water loss rate and biomass accumulation declined, while Chla, Chlb, Chla＋b and carotenoids （Car） increased and more photosynthetic products were allocated to stem and leaf growth. Maximum growth vigor, net photosynthetic rate and total biomass accumulation in Amorpha fruticosa seedlings was recorded at 75 80% soil water-holding capacity and 100% light density in greenhouse environments.

关键词： Amorpha fruticosa ecophysiological characteristics light intensity seedling soil moisture

Nuclear factor-KB decoy oligodeoxynucleotides attenuates ischemia/reperfusion injury in rat liver graft

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World Journal of Gastroenterology 2005年第44期11卷 6960-6967页

作者： Ming-qing Xu xiu-Rong Shuai Mao-Lin Yan Ming-Man Zhang Lu-Nan Yan Department of General Surgery West China Hospital Sichuan University Chengdu 610041 Sichuan Province China Department of General Surgery Sichuan Provincial Hospital Chinese People's Armed Police ForcesLeshan 640014 Sichuan Province China

AIM： To evaluate the protective effect of NF-kB decoy oligodeoxynucleotides （ODNs） on ischemia/reperfusion （I/R） injury in rat liver graft. METHODS： Orthotopic syngeneic rat liver transplantation was performed with 3 h of cold preservation of liver graft in University of Wisconsin solution containing phosphorothioated double-stranded NF-kB decoy ODNs or scrambled ODNs. NF-kB decoy ODNs or scrambled ODNs were injected intravenously into donor and recipient rats 6 and 1 h before operation, respectively. Recipients were killed 0 to 16 h after liver graft reperfusion. NF-kB activity in the liver graft was analyzed by electrophoretic mobility shift assay （EMSA）. Hepatic mRNA expression of TNF-α, IFN-γ and intercellular adhesion molecule-1 （ICAM-1） were determined by semiquantitative RT-PCR. Serum levels of TNF-α and IFN-γ were measured by enzyme-linked immunosorbent assays （ELISA）. Serum level of alanine transaminase （ALT） was measured using a diagnostic kit. Liver graft myeloperoxidase （MPO） content was assessed. RESULTS： NF-kB activation in liver graft was induced in a time-dependent manner, and NF-kB remained activated for 16 h after graft reperfusion. NF-kB activation in liver graft was significant at 2 to 8 h and slightly decreased at 16 h after graft reperfusion. Administration of NF-kB decoy ODNs significantly suppressed NF-kB activation as well as mRNA expression of TNF-α, IFN-γ, and ICAM-1 in the liver graft. The hepatic NF-kB DNA binding activity [presented as integral optical density （IOD） value] in the NF-kB decoy ODNs treatment group rat was significantly lower than that of the I/R group rat （2.16±0.78 vs 36.78 ±6.35 and 3.06±0.84 vs 47.62± 8.71 for IOD value after 4 and 8 h of reperfusion, respectively, P〈0.001）. The hepatic mRNA expression level of TNF-α, IFN-γ and ICAM-1 rpresented as percent of β-actin mRNA （%）] in the NF-kB decoy ODNs treatment group rat was significantly lower than that of the I/R group rat （8.31 ±3.48 vs 46.37±10.65 and 7.46± 3.72

关键词： Hepatic ischemia/reperfusion injury NF-kB Liver graft

Spectroscopic Studies on Co(Ⅱ),Ni(Ⅱ),Zn(Ⅱ) Complexes with 4,4'-Bipyridine

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Chemical Research in Chinese Universities 2010年第6期26卷 1011-1015页

作者： SHI xiu-min WANG Hai-yan LI Yan-bing YANG Jing-xiu CHEN Lei HUI Ge XU Wei-qing ZHAO Bing State Key Laboratory of Supramoleeular Structure and Materials Jilin University Changchun 130012 P. R. China College of Chemical Engineering Changehun University of Technology Changehun 130012 P. R. China The Second Hospital Jilin University Changchun 130041 P. R. China

Fourier-transform infrared（FTIR）,Raman and ultraviolet-visible spectra of 4,4＇-bipyridine and its me-tal-organic coordination compounds synthesized from 4,4＇-bipyridine and nitrate of Co（Ⅱ）,Ni（Ⅱ） and Zn（Ⅱ） were measured and analyzed,*** main FTIR and Raman bands were assigned in *** relationship between these characteristic bands and the structure of ligands and coordination compounds were discussed.

关键词： 4 4'-Bipyridine Infrared spectrum Raman spectrum Ultraviolet-Visible spectrum

Neuroprotective Effects of San-Jia-Fu-Mai Decoction: Studies on the in vitro and in vivo Models of Parkinson's Disease

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World Journal of Traditional Chinese Medicine 2021年第2期7卷 192-200页

作者： Chang Qu Ling Liu qing-qing Xu Yan-Fang Xian Zhi-xiu Lin School of Chinese Medicine Faculty of MedicineThe Chinese University of Hong Kong School of Basic Medicine Guizhou University of Traditional Chinese MedicineGuizhouChina Brain Research Centre School of Chinese MedicineFaculty of MedicineThe Chinese University of Hong Kong Hong Kong Institute of Integrative Medicine Faculty of MedicineThe Chinese University of Hong KongShatinNTHong Kong

Objective:The objective of this study was to investigate whether 70%aqueous ethanol extract of San-Jia-Fu-Mai decoction extract(SJFMDE)could protect against 1-methyl-4-phenylpyridinium(MPP+)-induced oxidative stress in PC12 cells and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced motor function deficits in *** and Methods:The cell viability,the levels of intracellular reactive oxygen species(ROS),malondialdehyde(MDA),and glutathione(GSH)in the MPP+-treated PC12 cells were *** function deficits and dopamine(DA)level in the brain striatum and tyrosine hydroxylase(TH)-positive cells in substantia nigra pars compacta(SNc)of the MPTP-treated mice were ***:The results showed that SJFMDE could reduce cell death and the levels of ROS and MDA while increase the level of GSH in the MPP+-treated PC12 *** addition,in vivo studies showed that oral administration of SJFMDE(3,6,and 12 g/kg)significantly improved the motor function deficits induced by MPTP and enhanced the DA level in the striatum and TH-positive neuronal cells in SNc of the MPTP-treated ***:Our results revealed that SJFMDE possessed neuroprotective effects against neurotoxicity induced by MPP+and motor function deficits induced by MPTP via suppressing oxidative stress and increasing the levels of DA and TH,indicating that SJFMDE might be a promising Chinese medicine formula for the treatment of Parkinson’s disease.

关键词： 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine 1-methyl-4-phenylpyridinium motor function deficits oxidative stress Parkinson’s disease San-Jia-Fu-Mai decoction

Antioxidant Activity of Pigment Extracted from Green-Wheat-Bran

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Agricultural Sciences in China 2010年第6期9卷 825-832页

作者： TANG Xiao-zhen DONG Yu-xiu WEI Si-qing ZHANG Xian-sheng YIN Yan-ping Shandong Agricultural University Tai＇an 271018 P.R.China Shandong External Economy Trade Technical School Tai＇an 271000 P.R.China

The anthocyanin pigment extracted from green-wheat-bran was studied to identify its antioxidant *** antioxidant activities of the pigment were evaluated by anti-lipid peroxidation,total antioxidant activity （TAA）,superoxide anion radical scavenging activity （SARSA）,active oxygen scavenging activity （AOSA）,and DPPH （1,1-diphenyl-2 picrylhydrazyl free radical） radical scavenging *** results showed that the pigment had higher antioxidant activity and TAA,SARSA,AOSA and *** activities at a certain concentration than Vc （antiscorbutic vitamin,vitamin C）,and the capacity increased with the increase of pigment *** TAA was 51.06 U mL-1,1.73 times of Vc,and SARSA 18 025.21 U mL-1,2.26% higher than Vc,and AOSA 3 776.31 U mL-1,1.24 times of *** to the *** activity of the pigment,there was a trend that higher concentration performed higher activity significantly improved with the company of *** pigment showed significant antioxidant activities evaluated by different *** will provide a better understanding on antioxidant activity of green wheat and allow the screening or breeding of green wheat varieties with higher antioxidant activity for food processing.

关键词： pigment from green-wheat-bran anti-lipid peroxidation total antioxidant superoxide anion radical scavenging,active oxygen scavenging DPPH.scavenging