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Basal internode elongation of rice as affected by light intensity and leaf area

The Crop Journal 2020年第1期8卷 62-70页

作者： Xuhua Zhong kaiming Liang Bilin Peng ka Tian Xiaojuan Li nongrong Huang Yanzhuo Liu Junfeng Pan Rice Research Institute of Guangdong Academy of Agricultural Sciences Guangzhou 510640GuangdongChina Guangdong Key Laboratory of New Technology for Rice BreedingGuangzhou 510640GuangdongChina

Short basal internodes are important for lodging resistance of rice(Oryza sativa L.).Several canopy indices affect the elongation of basal internodes,but uncertainty as to the key factors determining elongation of basal internodes *** objectives of this study were(1)to identify key factors affecting the elongation of basal internodes and(2)to establish a quantitative relationship between basal internode length and canopy *** inbred rice cultivar,Yinjingruanzhan,was grown in two split-plot field experiments with three n rates(0,75,and 150 kg n ha−1 in early season and 0,90,and 180 kg n ha−1 in late season)as main plots,three seedling densities(16.7,75.0,and 187.5 seedlings m−2)as subplots,and three replications in the 2015 early and late seasons in Guangzhou,*** intensity at base of canopy(Lb),light quality as determined from red/far-red light ratio(R/FR),light transmission ratio(LTR),leaf area index(LAI),leaf n concentration(nLV)and final length of second internode(counted from soil surface upward)(FIL)were *** n rate and seedling density resulted in significantly longer *** was negatively correlated with Lb,LTR,and R/FR(Pnd positively correlated with LAI(Pnot correlated with nLV(P>0.05).Stepwise linear regression analysis showed that FIL was strongly associated with Lb and LAI(R2=0.82).Heavy n application to pot-grown rice at the beginning of first internode elongation did not change *** conclude that FIL is determined mainly by Lb and LAI at jointing *** has no direct effect on the elongation of basal internodes.n application indirectly affects FIL by changing LAI and light conditions in the rice *** LAI and improving canopy light transmission at jointing stage can shorten the basal internodes and increase the lodging resistance of rice.

关键词： Internode elongation Leaf area index Light intensity Light quality R/FR,Light transmission ratio Leaf n concentration

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Supramolecular Self-assembly of Amphiphilic Alkynylplatinum(II)2,6-Bis(n-alkylbenzimidazol-2′-yl)pyridine Complexes

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Chemical Research in Chinese Universities 2021年第5期37卷 1079-1084页

作者： Andy Shun-Hoi CHEUnG Sammual Yu-Lut LEUnG Franky ka-Wah HAU Vivian Wing-Wah YAM Institute of Molecular Functional Materials and Department of Chemistry The University of Hong KongPokfulam RoadHong KongP.R.China

Alkynylplatinum(II)bzimpy complexes of trimethylammoniumbenzylethynyl ligand have been synthesized and *** with long alkyl chains have been found to exhibit interesting self-assembly properties in the acetonitrile *** amphiphilic nature of the complexes has led to the formation of nanorods,as revealed by electron microscopy *** increasing the polarity of the solvent media has given rise to the enhancement of low-energy emission.

关键词： solution. platinum alkyl

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“Fast Track”nasogastric decompression of rectal cancer surgery

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Frontiers of Medicine 2011年第3期5卷 306-309页

作者： ka Li Zongguang Zhou Zengrong Chen Yi Zhang Cun Wang Department of Gastrointestinal Surgery West China HospitalSichuan UniversityChengdu 610041China Institute of Digestive Surgery West China HospitalSichuan UniversityChengdu 610041China

This study evaluates the application of fast track(FT)nasogastric decompression in patients who underwent anterior resection of rectal cancer.A randomized control trial was performed comparing the group with the fast track treatment(n=57)and the group with traditional nasogastric decompression(n=84).Preoperative characteristics and postoperative recovery indices were recorded and *** results indicate no significant differences in gender(P=0.614),age(P=0.653),tumor location(P=0.113),and TnM stages(P=0.054)were observed between the 2 *** differences in the type of resection,anastomosis,and adoption of protective colostomy were all not significant between the FT and the traditional *** the first 24 hours after surgery,the volume of nasogastric drainage averaged 197 ml in the FT group and 155 ml in the traditional group(P=0.197).The initiation of test-meal(P=0.000),semiliquid diet(P=0.002),and ordinary diet(P=0.008)were all significantly shorter in the FT ***,compared with the other group,the patients in the FT group enjoyed earlier removal of the abdominal drainage,urinary catheter,and shorter hospital stays(P=0.000).Based on a correlation test,the duration of nasogastric decompression is related to the time of test-meal and semiliquid *** routine usage of nasogastric decompression in rectal surgery is *** fast track procedure might help in facilitating postoperative functional and diet recovery,reducing the time of catheterization,and shortening hospital stay.

关键词： fast track nasogastric decompression rectal cancer surgery

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基于线粒体DnA控制区序列的极边扁咽齿鱼群体遗传研究

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水产科学 2024年第1期43卷 79-87页

作者：杨濯羽杜岩岩卡伟焦文龙王太张艳萍达虎甘肃省水产研究所甘肃省冷水性鱼类种质资源与遗传育种重点实验室甘肃兰州730030 甘肃省计算中心甘肃兰州730030

极边扁咽齿鱼是黄河上游特有的裂腹鱼类,由于人类活动的加剧,使其野生数量急剧下降,近年来通过增殖放流的方式为野生资源量进行补充。为评价增殖放流过程中人工繁育群体对野生群体的种质资源的影响,笔者利用线粒体DnA控制区(D-loop)序... 详细信息

极边扁咽齿鱼是黄河上游特有的裂腹鱼类,由于人类活动的加剧,使其野生数量急剧下降,近年来通过增殖放流的方式为野生资源量进行补充。为评价增殖放流过程中人工繁育群体对野生群体的种质资源的影响,笔者利用线粒体DnA控制区(D-loop)序列来探究极边扁咽齿鱼野生和养殖的4个群体遗传多样性、遗传分化及遗传结构的差异。研究结果显示,4个群体均表现出了较高的单倍型多样性(0.950±0.011)和较低的核苷酸多样性(0.00987±0.00041),并且野生群体的单倍型数目、单倍型多样性指数、核苷酸多样性指数均高于人工繁育群体。遗传结构分析结果显示,野生群体与人工繁育群体之间已产生了一定的遗传分化。中性检验表明,2个野生群体可能经历过种群扩张事件。研究结果表明,极边扁咽齿鱼人工繁育群体可能受到亲本数量有限、人工选择等影响,遗传多样性略有降低,有必要定期开展增殖放流效果的评估,并采用科学的人工繁育方法,丰富极边扁咽齿鱼种群的遗传多样性。

关键词：极边扁咽齿鱼线粒体DnA控制区野生群体人工繁育群体遗传多样性

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Effect of herpesvirus infection on pancreatic duct cell secretion

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World Journal of Gastroenterology 2005年第38期11卷 5997-6002页

作者： Péter Hegyi Balázs rdg Zoltán Rakonczai Jr Tamás Takács János Lonovics Annamária Szabolcs Réka Sári András Tóth Julius G Papp András Varró Mária k kovács Mike A Gray Barry E Argent Zsolt Boldogki First Department of Medicine Department of Biology Division of Cardiovascular Pharmacology School of Cell and Molecular Biosciences

AIM： To examine the effect of acute infection caused by herpesvirus （pseudorabies virus, PRV） on pancreatic ductal secretion. METHODS： The virulent Ba-DupGreen （BDG） and non- virulent ka-RREp01acgfp （kEG） genetically modified strains of PRV were used in this study and both of them contain the gene for green fluorescent protein （GFP）. Small intra/ interlobular ducts were infected with BDG virus （10^7 PFU/mL for 6 h） or with kEG virus （10^10 PFU/mL for 6 h）, while non-infected ducts were incubated only with the culture media. The ducts were then cultured for a further 18 h. The rate of HCO3 secretion [base efflux -λ（B）] was determined from the buffering capacity of the cells and the initial rate of intracellular acidification （1） after sudden blockage of basolateral base loaders with dihydro-4,4,- diisothiocyanatostilbene-2,2,-disulfonic acid （500 μmol/L） and amiloride （200 μmol/L）, and （2） after alkali loading the ducts by exposure to nH4Cl. All the experiments were performed in HCO3-buffered Ringer solution at 37 ℃ （n = 5 ducts for each experimental condition）. Viral structural proteins were visualized by immunohistochemistry. Virallyencoded GFP and immunofluorescence signals were recorded by a confocal laser scanning microscope.RESULTS： The BDG virus infected the majority of accessible cells of the duct as judged by the appearance of GFP and viral anUgens in the ductal cells. kEG virus caused a similarly high efficiency of infection. After blockage of basolateral base loaders, BDG infection significantly elevated -λB-） 24 h after the infection, compared to the non-infected group. However, kEG infection did not modify -λB-）. After alkali loading the ducts, -λB-） was significantly elevated in the BDG group compared to the control group 24 h after the infection. As we found with the inhibitor stop method, no change was observed in the group kEG compared to the non-infected group. COnCLUSIOn： Incubation with the BDG or kEG strains of PRV results in an effective i

关键词： Pancreas Hypersecretion Ductal cells Infection Pseudorabies virus

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Evaluation of natural forest regeneration as a part of land restoration in the khentii massif,Mongolia

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Journal of Forestry Research 2020年第5期31卷 1773-1786页

作者： David Juricka Antonın kusbach Jana Parılkova Jakub Houska Pavlına Ambrozova Vaclav Pecina Zdena Rosicka Martin Brtnicky Jindrich kynicky Department of Geology and Pedology Faculty of Forestry and Wood TechnologyMendel UniversityZemedelska 161300 BrnoCzech Republic Department of Forest Botany Dendrology and GeobiocoenologyFaculty of Forestry and Wood TechnologyMendel UniversityZemedelska161300 BrnoCzech Republic Faculty of Civil Engineering Institute of Water StructuresBrno University of TechnologyZizkova 1760200 BrnoCzech Republic Central European Institute of Technology Brno University of TechnologyPurkynova 656/12361200 BrnoCzech Republic

Forest stands in the semi-arid environment of northern Mongolia have an essential role in controlling ongoing desertification in the surrounding *** the last decade,the total forest area has decreased *** aim of this study was to evaluate the potential of natural regeneration as an essential element for ensuring sustainability of these *** on field measurements from 120 plots in six sites,our assessment tool revealed five qualitative categories of forest regeneration,allowing us to assess impacts of both grazing and environmental conditions on the regeneration *** is a crucial factor and adversely affects *** sites with relatively low grazing intensity,low soil moisture levels represent the main reason for reduced *** approach to classification proposed in this study allows for the identification and interpretation of stand conditions where natural regeneration has *** study provides an important foundation to inform decisionmaking related to land protection and restoration *** findings could be used in comparative studies and,importantly,may aid further mapping of Mongolian forests.

关键词： Mongolia natural forest regeneration Seedlings Larix sibirica Land restoration Desertification

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Comparative phytochemical analysis of Coffea benghalensis Roxb. Ex Schult, Coffea arabica L. and Coffea liberica Hiern

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Asian Pacific Journal of Tropical Medicine 2018年第8期11卷 480-485页

作者： éva Brigitta Patay ágnes Alberti Orsolya Csernák Szilvia Stranczinger nóra Pap Department of Pharmacognosy Faculty of Pharmacy University of Pécs Department of Pharmacognosy Faculty of Pharmacy Semmelweis University Department of Plant Biology Faculty of Sciences University of Pécs

Objective: To make phytochemical studies of the leaf, pericarp and seed of Coffea benghalensis(C. Benghalensis) compared with those of the widely known Coffea arabica and Coffea liberica. Methods: The sample extracts were prepared by Soxhlet-extraction. Polyphenol content was analyzed by HPLC-ESI-MS/MS, the identification was carried out based on the retention time, UV and mass spectra of standards and literature data of the detected compounds. Results: Phenolic acids like caffeoylquinic acids, dicaffeoylquinic acids, feruloylquinic acids and coumaroylquinic acid, as well as mangiferin were detected as main constituents in all extracts. Procyanidin trimers were present exclusively in the leaves. In C. benghalensis, main constituents were 5-caffeoylquinic acid and 4-caffeoylquinic acid. Flavan-3-ols were described in all immature and mature pericarp and leaf extracts. Even though 4-feruloylquinic acid was described in both immature and mature seed, dicaffeoylquinic acids were identified only in the mature seed extracts. Mangiferin was present in the leaf, mature pericarp and seed. Conclusions: These analyses provide new chemotaxonomical data for the selected coffees, especially for C. benghalensis. Due to its high polyphenol content, our results indicate its significance of providing new data as a possible source for industry.

关键词： Coffee LC-MS Polyphenols Caffeoylquinic acids

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Room temperature optical mass sensor with an artificial molecular structure based on surface plasmon optomechanics

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Photonics Research 2018年第9期6卷 867-874页

作者： JIAn LIU ka-DI ZHU key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Shanghai 200240China School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of Advanced Microstructures Nanjing 210000China

We propose an optical weighing technique with a sensitivity down to a single atom through the coupling between a surface plasmon and a suspended graphene nanoribbon resonator. The mass is determined via the vibrational frequency shift on the probe absorption spectrum while the atom attaches to the nanoribbon surface. We provide methods to separate out the signals of the ultralow frequency vibrational modes from the strong Rayleigh background, first based on the quantum coupling with a pump-probe scheme. Owing to the spectral enhancement in the surface plasmon and the ultralight mass of the nanoribbon, this scheme results in a narrow linewidth(~GHz)and ultrahigh mass sensitivity(~30 yg). Benefitting from the low noises, our optical mass sensor can be achieved at room temperature and reach ultrahigh time resolution.

关键词：光学称重技术等离子体通讯技术发展现状

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FR-Ⅲ型矫治器对不同生长发育期Ⅲ类错牙合颅面结构的影响

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临床口腔医学杂志 2024年第7期40卷 402-406页

作者：王晨林沅佑陈嘉婷赵立星口腔疾病研究国家重点实验室国家口腔疾病临床医学研究中心四川大学华西口腔医院正畸科四川成都610041

目的:对不同生长发育期的安氏Ⅲ类错牙合畸形,根据颈椎骨龄分期分组,通过对正畸治疗前后头颅侧位片的测量分析,比较不同生长发育期开展FR-Ⅲ型矫治器治疗的颅面部效果差异。方法:选取34例使用FR-Ⅲ型矫治器治疗,处于生长发育期的安氏Ⅲ... 详细信息

目的:对不同生长发育期的安氏Ⅲ类错牙合畸形,根据颈椎骨龄分期分组,通过对正畸治疗前后头颅侧位片的测量分析,比较不同生长发育期开展FR-Ⅲ型矫治器治疗的颅面部效果差异。方法:选取34例使用FR-Ⅲ型矫治器治疗,处于生长发育期的安氏Ⅲ类患者,根据颈椎骨龄分期分组:生长发育高峰前期组(CVMⅠ~Ⅱ期)、生长发育高峰期组(CVMⅢ~Ⅳ期)。使用Dolphin 11.8软件对患者颅面结构进行X线头影测量分析。结果:治疗后SnA角、AnB角、U1-Sn角、U1-APog距和覆盖、nA-PA角均显著增大(Pn′Pog′角、n′-Sn-Pog′角和IMPA角显著减小(PnB角、MP-Sn差值绝对值显著大于高峰前期组(P<0.05)。结论:FR-Ⅲ型矫治器可促进上颌骨向前生长,改善软组织侧貌,但没有显著抑制下颌骨生长。在生长发育高峰前期矫治,促进上颌骨向前生长的可能性更大,在高峰期矫治会引起下颌骨顺时针旋转。

关键词：安氏Ⅲ类错牙合 FR-Ⅲ型矫治器颈椎骨龄

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Antioxidant potential,tannin and polyphenol contents of seed and pericarp of three Coffea species

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Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 356-362页

作者： va Brigitta Patay nikolett Sali Tams kszegi Rita Csepregi Viktória Lilla Blaz Tibor Sebastian németh Tibor németh nóra Papp Institute of Pharmacognosy Medical SchoolUniversity of PcsRókus 2.PcsHungary7624 Department of Laboratory Medicine Medical SchoolUniversity of PcsIfjúsg 13 PcsHungary76243 Jnos Szentgothai Research Center Ifjúsg 20 PcsHungary.76244 Department of Pharmacognosy Faculty of Medicine and PharmacyUniversity of Oradea

Objective:To investigate the antioxidant activity,total phenolic and total tannin content of the pericarp and the seed of Coffea benghalensis(***) and Coffea liberica compared to Coffea arabica(***).Methods:The antioxidant potential,total tannin and polyphenol contents of the immature and mature seed and pericarp of *** and Coffea liberica were quantified and compared to *** chemiluminescence(ECL).2,2-diphenyl-1-picrylhydruzyl(DPPH).oxygen radical absorbance capacity,Folin-Ciocaltcau method and total tannin content assays were ***:Trolox equivalent(TE/g plant material) values obtained by ECL and DPPH methods showed loose correlation(r^2=0.587)while those measured by oxygen radical absorbance capacity assay were higher without correlation in each plant.A closer correlation was detected between the ECL method and the percentage antioxidant activity of the DPPH technique(r^2=0.610 7) in each species,however the immature pericarp of *** showed much higher DPPH scavenging potential than was seen in the ECL *** immature pericarp of *** expressed the highest tannin and polyphenol content,and a high polyphenol level was also detected in the immature seed of *** immature pericarp of Bengal and Liberian coffees showed the largest amount of phenolic ***:The obtained data highlight the potential role of *** as a new source of natural antioxidants and polyphenols compared to ***.

关键词： Coffee 2,2-diphcnyl-1-picrylhydrazyl Enhanced chemiluminescence Folin-Ciocalteau Oxygen radical absorbance capacity Total tannin method

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