检索结果-南通市图书馆

Agricultural Sciences 2024年第4期15卷 449-471页

作者： Djeuani Astride carole Moutamal Djem Rose Theophine Derricka Mbouobda Hermann Désiré Abdoulaye Souaibou Meliga Essimi célestine Bouopda Nono Joël Anafack Donasson Dioril Messouang Bernard Didier Ndongo III Boris charlen Kaffo Emmanuel Kamga Fossouo Anselme Xavier Tiki Antoine Marie Kevin Nyimiebolo Bengono Audrey Maguy Manuela Diobe Motassy Adounga Samuel Brice Amama Amama Benjamin Nshanji Jones Panguepko Fendju christophe Nzie Oussena Nguetrapouna Issofa Mpon Ikoyin Linda NKouéya christelle Ladone Amang Amang A. Ziem Niemenak Nicolas Laboratory of Plant Physiology and Biochemistry Department of Biological Sciences Higher Teachers&#8217 Training College University of Yaound&#233 1 Yaound&#233 Cameroon Department of Plant Biology Faculty of Science University of Yaound&#233 1 Yaound&#233 Cameroon Department of Biology Higher Teachers&#8217 Training College Bambili University of Bamenda Bamenda Cameroon Mbidjoro Sustainable Living Environment Ngaound&#233r&#233 Cameroon cé r&#232s Agricole Yaound&#233 Cameroon KAFFO Farm Baham Cameroon Agro Ankh Dschang Cameroon Bio Farm of Lolodorf Lolodorf Cameroon Or Rouge d’ Afrique Obala Cameroon Bafoussam Farm Bafoussam Cameroon King Farms Baham Cameroon Department of Microbiology Faculty of Science University of Yaound&#233 1 Yaound&#233 Cameroon

Strawberry (Fragaria spp.) is one of the most important fruits classified as exotic fruits imported into cameroon. To have an inventory of its cultivation in cameroon, a survey study was carried out among eight farms of Fragaria spp. from January 2021 to February 2022. The plant was introduced in cameroon in 2018. There are 13 varieties of Fragaria spp. currently cultivated. Among these 13 varieties, eleven are hybrids of Fragaria x ananassa (“Amiga”, “Amine”, “camarosa”, “chandler”, “charlotte”, “Elsanta”, “Gariguette”, “Madame Moutot”, “Ostara”, “Ruby gem” and “San Andreas”), and two of the hybrids of Fragaria vesca (“Maestro” and “mara des bois”). The cropping system, irrigation system, and type of fertilizers applied differ from one strawberry farm to another. Biofertilizers (such as mycorrhizal), inorganic and organic fertilizers are actually used to improve production. The potential annual production of strawberries from January 2021 to February 2022, estimated based on the survey data, was 21.216 tons for all growers. Among these eight production farms, the Lolodorf BIO Farm presents 6000 kg (six tons) of strawberries and 100,000 stolons (seedlings) produced, from seven varieties of Fragaria spp. cultivated, with 6 varieties which are hybrids variety Fragaria x ananassa (“Amiga”, “Amine”, “chandler”, “Gariguette”, “Madame Moutot”, and “Ruby gem”), and one which is a hybrid of Fragaria vesca (“mara des bois”). certain diseases were also observed and recorded depending on the growing areas.

关键词： Fragaria spp. cultivation Technique Attack of Pathogens Annual Production cameroon

Experimental Observation of Bright and Dark Solitons Mode-Locked with Zirconia-Based Erbium-Doped Fiber Laser

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2018年第2期35卷 25-28页

作者： A.M.Markom S.J.Tan H.Haris M.c.Paul A.Dhar S.Das S.W.Harun Faculty of Electrical Engineering Universiti Teknologi MARAMasai 81750Malaysia School of Engineering KDU University CollegeUtropolis GlenmarieShah Alam 40150Malaysia Department of Electrical Engineering University of MalayaKuala Lumpur 50603Malaysia Fiber Optics and Photonics Division CSIR-Central Glass and Ceramic Research InstituteKolkata 700032India

We demonstrate the generation of dark and bright solitons with our homemade zirconia-based erbium-doped fiber and graphene oxide（GO） saturable absorber in anomalous dispersion *** GO is fabricated using an abridged Hummer＇s method,which is combined with polyethylene oxide to produce a composite *** film is sandwiched between two optical ferrules and embedded in the laser cavity to enhance its birefringence and *** self-starting bright soliton is easily generated at pump power of 78 mW with the whole length cavity of 14.7 *** laser produces the bright pulse train with repetition rate,pulse width,pulse energy and central wavelength being 13.9 MHz,0.6 ps,2.74 p J and 1577.46 nm,***,by adding the 10 m of single mode fiber into the laser cavity,dark soliton pulse is *** the formation of dark pulse train,the measured repetition rate,pulse width,pulse energy and central wavelength are 8.3 MHz,20 ns and 4.98 p J and1596.82 nm,*** pulses operate in the anomalous region.

关键词： Zr EDF Experimental Observation of Bright and Dark Solitons Mode-Locked with Zirconia-Based Erbium-Doped Fiber Laser

大豆蛋白对21～57日龄仔猪生长性能和养分消化率的影响

在线全文

学校读者我要写书评

暂无评论

饲料博览 2016年第12期 43-43页

作者： Guzmán P Salda?a B c.mara L Mateos G G

试验旨在探究饲料中添加不同来源的浓缩大豆蛋白（SPc）和豆粕（SBM）对断奶仔猪生长性能和养分消化率的影响。试验共分为两个阶段,共5组,第一阶段（21;9日龄）添加不同来源的大豆蛋白。两组采用来自于美国和巴西的SPc,其他3组饲料中添... 详细信息

试验旨在探究饲料中添加不同来源的浓缩大豆蛋白（SPc）和豆粕（SBM）对断奶仔猪生长性能和养分消化率的影响。试验共分为两个阶段,共5组,第一阶段（21;9日龄）添加不同来源的大豆蛋白。两组采用来自于美国和巴西的SPc,其他3组饲料中添加来自美国、巴西和阿根廷的SBM。第二阶段（49;7日龄）5组均采用相同普通的玉米-豆粕型日粮。试验将在SPc与SBM、美国与巴西的SPc、美国和巴西和阿根廷的SBM之间进行比较。第一阶段中,与SBM各组相比,SPc各组仔猪的生长性能更相近。在第一阶段,SPc组仔猪断奶后腹泻（PWD）低于SBM组（P=0.067）。与南美洲相比,饲料中添加美国大豆产品的仔猪平均日增重（ADG）和料重比极显著增加（Pc组仔猪粗蛋白的总肠道消化率系数（cTTAD）显著增加（Pc各组的营养物质消化率水平相近,但饲喂巴西大豆的SBM组的营养物质消化率极显著降低（Pc组的PWD有降低趋势（P=0.062）。此外,饲喂美国和巴西SBM仔猪的PWD发生率显著降低（PcTTAD无显著差异,但与南美SBM相比,美国大豆的营养物质消化率有增加趋势（P<0.10）。试验数据表明,不同批次、不同来源的大豆的化学成分和营养价值不同,对仔猪的生长性能、PWD和养分消化率有一定影响。

关键词：仔猪生长断奶后腹泻大豆粕大豆浓缩蛋白

Anti-inflammatory effects of Mangifera indica *** in a model of colitis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第39期16卷 4922-4931页

作者： Lucía Márquez Beatriz G Pérez-Nievas Icíar Gárate Borja García-Bueno José LM Madrigal Luis Menchén Gabino Garrido Juan c Leza Department of Pharmacology School of MedicineUniversity Complutense and Centro de Investigación en Red de Salud Mental(CIBERSAM) Pharmaceutical chemistry center and University of La Habana Health Research Institute Hospital 12 de Octubre(I+12) Gastroenterology Service Hospital General Universitario Gregorio Maraón and CIBEREHD Department of chemistry and Pharmacy University Católica del Norte

AIM:To investigate the effect of aqueous extract from Mangifera indica L.(MIE)on dextran sulfate sodium (DSS)-induced colitis in ***:MIE(150 mg/kg)was administered in two different protocols:(1)rectally,over 7 d at the same time as DSS administration;and(2)once daily over 14 d (by oral gavage,7 d before starting DSS,and rectally for 7 d during DSS administration).General observations of clinical signs were ***-inflammatory activity of MIE was assessed by myeloperoxidase(MPO)activity. colonic lipid peroxidation was determined by measuring the levels of thiobarbituric acid reactive substances (TBARS).Reduced glutathione(GSH)levels,expression of inflammatory related mediators[inducible isoforms of nitric oxide synthase(iNOS)and cyclooxygenase (cOX)-2,respectively]and cytokines[tumor necrosis factor(TNF)-αand TNF receptors 1 and 2]in colonic tissue were also ***(IL)-6 and TNF-α serum levels were also measured. RESULTS:The results demonstrated that MIE has anti-inflammatory properties by improvement of clinical signs,reduction of ulceration and reduced MPO activity when administered before *** addition,administration of MIE for 14 d resulted in an increase in GSH and reduction of TBARS levels and iNOS,cOX-2, TNF-αand TNF R-2 expression in colonic tissue,and a decrease in IL-6 and TNF-αserum levels. cONcLUSION:MIE has anti-inflammatory activity in a DSS-induced rat colitis model and preventive administration(prior to DSS)seems to be a more effective protocol.

关键词： Oxidative stress Ulcerative colitis Inflammation Polyphenols Mangifera indica Antioxidants

饲喂能量浓度不同的等蛋白质日粮对来自不同杜洛克父系杂种猪生长性能和胴体品质的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

饲料博览 2016年第2期26卷 35-35页

作者： c.mara L Berrocoso J D coma J López-Bote c J Mateos G G

试验旨在研究等蛋白质不同净能(NE)含量日粮对长白×大白杂交母猪与两个不同杜洛克父系(PIc L62与德国杜洛克)杂种猪生长性能、胴体品质和肉质性状的影响。试验表明,随着日粮净能含量的增加,采食量(FI)降低(线性,P<0.001),饲料利用率得... 详细信息

试验旨在研究等蛋白质不同净能(NE)含量日粮对长白×大白杂交母猪与两个不同杜洛克父系(PIc L62与德国杜洛克)杂种猪生长性能、胴体品质和肉质性状的影响。试验表明,随着日粮净能含量的增加,采食量(FI)降低(线性,Pc L62父系杂种猪有较大的采食量和平均日增重(ADG,Pc L62父系杂种猪生长得更快,比德国杜洛克父系杂种猪屠体更重。

关键词：胴体脂肪能源效率杜洛克公猪系原始切割产量

饲喂不同能量浓度的等蛋白质饲粮对杂种猪生长性能和胴体品质的影响

在线全文

学校读者我要写书评

暂无评论

饲料博览 2016年第4期26卷 56-56页

作者： c.mara L Berrocoso J D coma J López-Bote c J Mateos G G

试验旨在研究饲喂等蛋白质饲粮时,净能(NE)对猪生长性能、胴体品质和肉品质产生的影响,选取长×大杂交母猪与两头皮特兰公猪(PIc L62与德国皮特兰)进行杂交获得试验所需的杂交个体。试验表明,饲粮NE含量增加时,纯种猪的采食量(FI)极显... 详细信息

试验旨在研究饲喂等蛋白质饲粮时,净能(NE)对猪生长性能、胴体品质和肉品质产生的影响,选取长×大杂交母猪与两头皮特兰公猪(PIc L62与德国皮特兰)进行杂交获得试验所需的杂交个体。试验表明,饲粮NE含量增加时,纯种猪的采食量(FI)极显著降低(Pc L62的杂种猪的FI更低,日平均增重(ADG)更高(Pc L62的杂种猪(Pc L62的杂种猪的生长速度和脂肪含量均高于来自德国皮特兰的杂种猪。

关键词：体脂能量转化效率皮特兰父系原始削减产量

3c^(pro)of FMDV inhibits type II interferon-stimulated JAK-STAT signaling pathway by blocking STAT1 nuclear translocation

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2023年第3期38卷 387-397页

作者： Xiangju Wu Lei chen chao Sui Yue Hu Dandan Jiang Fan Yang Laura c.Miller Juntong Li Xiaoyan cong Nataliia Hrabchenko changhee Lee Yijun Du Jing Qi Shandong Key Laboratory of Animal Disease control and Breeding/Key Laboratory of Livestock and Poultry Multi-omics of mara Institute of Animal Science and Veterinary MedicineInstitute of Crop Germplasm ResourcesShandong Academy of Agricultural SciencesJinan250100China college of Life Science Shandong Normal UniversityJinan250358China State Key Laboratory of Veterinary Etiological Biology/National Foot and Mouth Disease Reference Laboratory/Key Laboratory of Animal Virology of Ministry of Agriculture Lanzhou Veterinary Research InstituteChinese Academy of Agricultural SciencesLanzhou730050China Department of Diagnostic Medicine and Pathobiology College of Veterinary MedicineKansas State UniversityManhattanKS66506USA college of Veterinary Medicine and Virus Vaccine Research center Gyeongsang National UniversityJinju52828Republic of Korea

Foot-and-mouth disease virus(FMDV)has developed various strategies to antagonize the host innate *** Lpro and 3cpro interfere with type I IFNs through different *** structural protein VP3 of FMDV degrades Janus kinase 1 to suppress IFN-γsignaling *** non-structural proteins of FMDV are involved in restraining type II IFN signaling pathways is *** this study,it was shown that FMDV replication was resistant to IFN-γtreatment after the infection was established and FMDV inhibited type II IFN induced expression of IFN-γ-stimulated genes(ISGs).We also showed for the first time that FMDV non-structural protein 3c antagonized IFN-γ-stimulated JAK-STAT signaling pathway by blocking STAT1 nuclear translocation.3c^(pro)expression significantly reduced the ISGs transcript levels and palindromic gamma-activated sequences(GAS)promoter activity,without affecting the protein level,tyrosine phosphorylation,and homodimerization of ***,we provided evidence that 3c protease activity played an essential role in degrading KPNA1 and thus inhibited ISGs mRNA and GAS promoter *** results reveal a novel mechanism by which an FMDV non-structural protein antagonizes host type II IFN signaling.

关键词： Foot-and-mouth disease virus(FMDV) 3c IFN-γ JAK-STAT signaling pathway STAT1 KPNA1

The Susceptibility of <i>Biomphalaria</i>spp. from Mwea Irrigation Scheme in Kenya against <i>Schistosoma mansoni</i>Miracidia Infection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biomedical Science and Engineering 2019年第11期12卷 477-486页

作者： D. M. Ngigi S. c. Kirui F. M. E. Wajala N. Oyaro Department of Biological Sciences University of Eldoret Eldoret Kenya Department of Biological Sciences Maasai Mara University Narok Kenya

Schistosomiasis as a neglected disease is second to malaria in its adverse effect to public health and socioeconomics impact in the tropics and sub-tropical of the developing countries where 90% of 249 million people affected are found in Africa. Mwea irrigation scheme in Kenya is infested with Biomphalaria spp. and the research set out to find their susceptibility to Schistosoma mansoni miracidia. Vector snails’ samples were taken from endemic region of Mwea irrigation farmlands and were morphological identified and then cultured. The miracidia exposed snails were transferred into aquaria and after four weeks of exposure they were examined for cercaria shedding twice every week under direct sunlight illumination. It was found that Mwea irrigation scheme was dominantly infested by Biomphalaria pfeifferi. From the morphological parameters of B. pfeifferi it was found that there was no statistical difference in physical characteristics between resistant and susceptible populations. The results in this study showed that the mean value of infection for the Field, F1 and F2 snail samples were 36.6 ± 3.72, 1.93 ± 1.46, 0.36 ± 0.049 respectively and the infection rate decreased from the field snail samples through F2 snail samples. This suggested that the exhibited resistant traits may be due to snail internal defense mechanisms rather than morphological characteristics and this could be thought that the various levels of B. pfeifferi susceptibility to S. mansoni is attributed to genetic variations within a population. Finally, the findings generated in this study, under laboratory condition, suggest that S. mansoni resistant population of B. pfeifferi can be isolated and mass reared with a view of diversifying biological control measures of the vector in Mwea irrigation scheme in Kenya.

关键词： Biomphalaria spp. Miracidia Mortality Infection Progeny

肝静脉压力梯度对预测终末期肝病的肝硬化患者存活率的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（胃肠病学分册） 2006年第3期2卷 48-49页

作者： Ripoll c. Baares R. Rincón D. 李翔 Seccon de Hepatologa Servicio de Aparato Digestivo Hospital General Universitario Gregorio Maraón Dr Esquerdo 46 Madrid 28007 Spain

Measurements of portal pressure, usually obtained via the hepatic venous pressure gradient (HVPG) may be a prognostic marker in cirrhosis. The aim of this study was to evaluate the impact of HVPG on survival in patients with cirrhosis in addition to the Model for End-Stage Liver Disease (MELD) score. We also examined whether inclusion of HVPG in a model with MELD variables improves its prognostic ability. Retrospective analyses of all patients who had HVPG measurements between January 1998 and December 2002 were considered. Proportional hazards cox models were developed. Prognostic calibrative and discriminative ability of the model was evaluated. In this period, 693 patients had a hepatic hemodynamic study, and 393 patients were included. Survival was significantly worse in those patients with greater HVPG value (univariate HR, 1.05; 95%cI, 1.02-1.08; P = .001). HVPG remained as an independent variable in a model adjusted by MELD, ascites, encephalopathy, and age (multivariate HR, 1.03; 95%cI, 1.00-1.06; P = .05) so that each 1 mmHg increase in HVPG had a 3%increase in death risk. In addition, HVPG as well as MELD score variables and age, significantly contributes to the calibrative predictive capacity of the prognostic model; however, discriminative ability improved only slightly (overall c statistic [95%cI]; MELD score variables: 0.71 [0.62-0.80], MELD score variables, age, and HVPG 0.76: [0.69-0.83]). In conclusion, HVPG has an independent effect on survival in addition to the MELD score. Although inclusion of HVPG and age in a survival predicting model would improve the calibrative ability of MELD, its discriminative ability is not significantly improved.

关键词：肝静脉压力梯度患者存活率终末期肝病模型血流动力学力值预测能力肝性脑病分辨能力预测模型