检索结果-南通市图书馆

维普期刊数据库

洞庭湖区典型稻田玉米水稻轮作下土壤—作物系统对施氮措施的响应

在线全文

学校读者我要写书评

暂无评论

中国农业科学 2024年第10期57卷 1979-1994页

作者：房康睿龙世平彭斯文陈山廖育林徐新朋赵士诚仇少君何萍周卫中国农业科学院农业资源与农业区划研究所/北方干旱半干旱耕地高效利用全国重点实验室/农业农村部植物营养与肥料重点实验室湖南省农业科学院

【目的】双季稻田水旱轮作后能够提高作物产能降低土壤有机质含量，但水旱轮作后化肥氮素配施不同有机物料对作物产量、氮素利用效率及有机质含量影响的报道较少。【方法】以玉米水稻轮作为研究对象，于2015—2021年在洞庭湖区紫潮泥和... 详细信息

【目的】双季稻田水旱轮作后能够提高作物产能降低土壤有机质含量，但水旱轮作后化肥氮素配施不同有机物料对作物产量、氮素利用效率及有机质含量影响的报道较少。【方法】以玉米水稻轮作为研究对象，于2015—2021年在洞庭湖区紫潮泥和红黄泥两种双季稻田上设置不施氮肥（CK）、单施化肥（NPK）、NPK+秸秆还田（NPKS）、NPK+有机肥（NPKM）、NPK+生物炭（NPKB）5种处理，探讨在两种土壤上不同施肥处理的作物产量、养分利用效率和土壤碳氮含量及平衡的变化。【结果】紫潮泥和红黄泥6年试验的平均玉米产量、水稻产量和年总产量分别为5.7、7.3和12.9 t·hm-2，三者在紫潮泥中的产量都略高于红黄泥，但差异都不显著。与NPK处理相比，NPKM处理使两种土壤的玉米和水稻平均产量分别显著（P<0.05）提高10.6%、4.20%。在所有处理中，NPKM处理玉米产量最高，为6.0 t·hm-2;NPKB处理水稻产量最高，为7.5 t·hm-2。NPKM和NPKB处理的6年平均年总产量分别显著（P<0.05）高于其他处理，但NPKM和NPKB处理间差异不显著。与其他处理相比，NPKM处理显著（P<0.05）提高了玉米水稻的化肥氮素回收率、农学效率和偏生产力，玉米季6年平均值分别为66.3%、39.5kg·kg-1、56.0 kg·kg-1，水稻季6年平均值分别为53.8%,21.9 kg·kg-1、68.6 kg·kg-1。NPKB处理较NPK、NPKS显著（P<0.05）提高了玉米水稻的化肥氮素农学效率和偏生产力，较NPK处理显著（P<0.05）提高了玉米化肥氮素回收率。两种土壤有机碳、全氮含量从第4年（2019年）开始显著下降。与试验开始前（2015年）相比，2021年紫潮泥和红黄泥施氮处理年平均有机碳含量分别下降了1.8、0.7 g·kg-1，全氮含量分别下降0.4、0.1 g·kg-1；两种土壤NPKM处理的土壤有机碳平均含量下降幅度最小、NPKB处理次之。NPKM处理的碳、氮投入量最高，平均土壤有机碳、全氮损失量最小，分别为0.48 t C·hm-2·a-1、94.7 kg N·hm-2·a-1。【结论】双季稻田水旱轮作后，化肥与有机肥、生物炭配施能提高作物产量和延缓土壤有机质下降，试验期间化肥配施有机肥处理玉米平均产量最高，化肥配施生物炭处理水稻平均产量最高。

关键词：玉米水稻轮作产量施肥措施土壤类型氮肥利用效率土壤碳氮

ON AMPHILIMNA POLYACANTHA *** THE SYSTEMATIC POSITION OF *** KOEHLER(OPHIUROIDEA)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 1983年第2期1卷 177-184页

作者： liao yulin (Institute of Oceanology,Academia Sinica) 1. Institute of Oceanology Academia Sinica Qingdao China

In the course of my studies of the ophiurans of southern China,I found a very strikingnew species of the genus Amphilimna and named it *** *** descriptionof which is given *** the same time I have dissected several specimens of ***-cantha *** ***(Koehler)at my disposal for *** detailedexamination of the internal structure of both species and by referring to the morphologyof the juveniles,I am convinced that *** Koehler is neither an ophiacanthid noran amphiurid but an ophiurid,by which reason a new genus,Sinophiura,is erected toaccommodate it.

关键词： oral view SP ON AMPHILIMNA POLYACANTHA SP.NOV.AND THE SYSTEMATIC POSITION OF A.MULTISPINA KOEHLER OPHIUROIDEA

CALLI ASTER QUADRISPINUS, A NEW SPECIES OF THE FAMILY GONIASTERIDAE (ASTEROIDEA) FROM SOUTHERN CHINA

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

海洋与湖沼 1989年第1期 26-27页

作者： liao yulin(Institute of Oceanology, Academia Sintca, Qingdao)

Among the sea-stars collected by the Institute of Oceanology, Academia Sinica, there was a single very large and handsome specimen representing a new species of the genus Calliaster Gray. The following is a descriptio... 详细信息

关键词： ASTEROIDEA CALLI ASTER QUADRISPINUS FROM SOUTHERN CHINA A NEW SPECIES OF THE FAMILY GONIASTERIDAE

ON THE FAMILY ASTEROMETRIDAE (CRINOIDEA) OF CHINA, WITH A DESCRIPTION OF SINOMETRA ACUTICIRRA GEN. ET SP. NOV.

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 1984年第1期2卷 109-117页

作者： liao yulin (Institute of Oceanology, Academia Sinica, Qingdao) 1. Institute of Oceanology Academia Sinica Qingdao

Five species of Asterometrids (Crinoidea) collected from China are recorded. One of them is described as a new genus and new species named Sinometra acuticirra, and three are recorded from China for the first time.

关键词： NOV OF CHINA ON THE FAMILY ASTEROMETRIDAE WITH A DESCRIPTION OF SINOMETRA ACUTICIRRA GEN CRINOIDEA SP

TWO NEW SPECIES OF OPHIDIASTERID SEA-STARS FROM THE VICINITY OF DIAOYUDAO, EAST CHINA SEA

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 1985年第1期3卷 30-36页

作者： liao yulin (Institute of Oceanology, Academia Sinica, Qingdao) 1. Institute of Oceanology Academia Sinica Qingdao

Two new species of the asteroid family Ophidiasteridae are described from two specimens collected by commercial fishery vessels of Qingdao from the vicinity of Diaoyudao (25°45’ N, 123°15’ E), East China Sea. Hacelia tuberculata sp. nov. shows affinities with H. tyloplax (H. L. Clark, 1914) and Linckia gracilis sp. nov. is related to L, laevigata (Linnaeus).

关键词： very TWO NEW SPECIES OF OPHIDIASTERID SEA-STARS FROM THE VICINITY OF DIAOYUDAO EAST CHINA SEA SEA

紫云英与化肥减施对土壤颗粒中黏粒矿物组成与转化的影响

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

土壤 2024年第3期56卷 567-575页

作者：黄雷成莉娟陈雨露耿明建聂军鲁艳红廖育林黄丽华中农业大学农业农村部长江中下游耕地保育重点实验室武汉430070 湖南省土壤肥料研究所农业农村部湖南耕地保育科学观测实验站长沙410125

为了探讨紫云英与不同比例化肥减施下,土壤纳米颗粒中黏粒矿物的组成与转化,以湖南省南县长期紫云英还田(MV)与100%、80%、60%和40%(F100、F80、F60和F40)4个比例化肥配施的长期定位试验为对象,将土壤分为4个粒级(>2000、2000~450、450~... 详细信息

为了探讨紫云英与不同比例化肥减施下,土壤纳米颗粒中黏粒矿物的组成与转化,以湖南省南县长期紫云英还田(MV)与100%、80%、60%和40%(F100、F80、F60和F40)4个比例化肥配施的长期定位试验为对象,将土壤分为4个粒级(>2000、2000~450、450~100、100~25 nm)的颗粒,研究黏粒矿物在不同粒级颗粒中的分布特征和转化规律。结果表明,①土壤颗粒由>2000 nm减小至100~25 nm,2000~450和450~100 nm颗粒中伊利石的相对含量降低8%~11%,100~25 nm颗粒中1.4 nm过渡矿物和蛭石极少甚至消失,游离铁和非晶质氧化铁的含量增加,在100~25 nm颗粒中最高。②紫云英与化肥减施下,化肥配施量80%前后矿物的转化出现明显差异。化肥从100%降至80%,高岭石的相对含量增加,增幅为14.1%~51.2%,而伊利石的相对含量降低,降幅为3.6%~11.7%;继续降低化肥配施量,高岭石的相对含量却降低,降幅为13.7%~28.8%,而伊利石的相对含量增加,增幅为2.6%~18.5%。③紫云英还田下随着化肥配施量的降低,游离铁的含量无明显变化规律,而非晶质铁的含量在所有粒径中均先显著提高后降低,在MV+F80处理100~25 nm颗粒中达到最高为9.45 g/kg。综上,紫云英配施减量化肥与土壤颗粒中高岭石、伊利石和非晶质铁转化有明显关系,以化肥减施20%处理影响效果最显著。

关键词：紫云英化肥减施纳米颗粒黏粒矿物

维普期刊数据库

High baseline tumor burden-associated macrophages promote an immunosuppressive microenvironment and reduce the efficacy of immune checkpoint inhibitors through the IGFBP2-STAT3-PD-L1 pathway

在线全文

学校读者我要写书评

暂无评论

Cancer Communications 2023年第5期43卷 562-581页

作者： Zhaowei Wen Huiying Sun Zhihua Zhang Yannan Zheng Siting Zheng Jianping Bin yulin liao Min Shi Rui Zhou Wangjun liao Department of Oncology Nanfang HospitalSouthern Medical UniversityGuangzhou510515GuangdongP.R.China Department of Cardiology Nanfang HospitalSouthern Medical UniversityGuangzhou510515GuangdongP.R.China

Background:Several clinical studies have uncovered a negative correlation between baseline tumor burden and the efficacy of immune checkpoint inhibitor(ICI)*** study aimed to uncover the specific mechanisms underlying the difference in sensitivity to ICI treatment between tumors with high(HTB)and low(LTB)tumor ***:For in vivo studies,several mouse models of subcutaneous tumors were established,and transcriptome sequencing,immunohistochemistry,and flow cytometry assays were used to detect the immune status in these subcutaneous *** in vitro experiments,co-culture models,cytokine antibody arrays,western blotting,flow cytometry,and enzyme-linked immunosorbent assays were used to explore the underlying molecular mechanisms Results:We found that MC38 or B16 subcutaneous tumors from the HTB group did not show any response to anti-programmed cell death protein-1(PD-1)*** flow cytometry assays,we found that the infiltration with CD8^(+)T cellswas significantly decreasedwhereasM2-like macrophageswere enriched in subcutaneous tumors of HTB groups compared with those of LTB *** changes were not affected by the initial number of injected tumor cells or tumor age,nor could they be reversed by surgical tumor *** colony-stimulating factor 1 receptor(CSF-1R)inhibitor PLX3397 injection at different time points of tumor growth only had an effect when administered in the early tumor stage to maintain the“heat”of the tumor microenvironment during the process of tumor growth,thereby achieving a response to ICI treatment when the tumor grew to a large ***,we found that insulin-like growth factor binding protein 2(IGFBP2)expression levelswere significantly elevated in HTB tumor ***2 promoted the programmed death-ligand 1(PD-L1)expression in M2-like macrophages by activating signal transducer and activator of transcription 3(STAT3),and PD-L1^(+)M2-likemacrophages exerted an immunosuppressive e

关键词： CD8^(+)T cell IGFBP2 immune checkpoint inhibitor macrophage PD-L1 STAT3 tumor burden tumor immune microenvironment

Depression accelerates gastric cancer invasion and metastasis by inducing a neuroendocrine phenotype via the catecholamine/β_(2)-AR/MACC1 axis

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

Cancer Communications 2021年第10期41卷 1049-1070页

作者： Changqie Pan Jianhua Wu Siting Zheng Huiying Sun Yisheng Fang Zhenhua Huang Min Shi Li Liang Jianping Bin yulin liao Jinzhang Chen Wangjun liao Department of Oncology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515P.R.China Department of Pathology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515P.R.China Department of Cardiology Nanfang HospitalSout4hern Medical UniversityGuangzhouGuangdong 510515P.R.China

Background:Depression is a common,easily ignored,accompanied disease of gastric cancer(GC)patients and is often observed with elevated plasma catecholamine *** frequently promotes GC progression and leads to poor clinical outcomes;however,the molecular mechanisms underlying depression-induced GC progression remain poorly *** aimed to study the effects of depression on GC progression and explore possible mechanisms mediating the action of depression-associated catecholamines on ***:Depression states of GC patients were graded using the Patient Health Questionnaire-9,and plasma catecholamine levels were examined by high performance liquid chromatography coupled with tandem mass *** and invasive GC cells were examined using transwell assays,and metastatic GC niches were imaged using bioluminescence technology in a depression mouse model established with chronic unpredictable mild *** depression-like behaviors were assessed through sucrose preference,forced swimming,and tail suspension *** of the neuroendocrine phenotype were observed via RT-PCR,Western blotting,flow cytometry,and transmission electron ***:Fifty-one GC patients(age:53.61±1.79 years;cancer duration:3.71±0.33 months;depression duration:2.37±0.38 months;male-to-female ratio:1.55:1)were enrolled in the *** grade was significantly higher in GC patients showing higher plasma levels of catecholamines(epinephrine:P=0.018;noradrenaline:P=0.009),higher oncogene metastasis-associated in colon cancer-1(MACC1)level(P=0.018),and metastasis(P<0.001).Further,depression-associated catecholamine specifically bound to the beta-2 adrenergic receptor(β_(2)-AR)and upregulated MACC1 expression,and thus promoting neuroendocrine phenotypic transformation through direct binding betweenMACC1 and ***,the neuroendocrine phenotypic transformation accelerated GC invasion in vitro and metastasis in ***

关键词： catecholamines depression gastric cancer MACC1 neuroendocrine phenotype psychological stress tumor metastasis

^(60)Co-γ射线辐照对紫云英生长及利用的影响

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

草业科学 2024年第9期41卷 2054-2062页

作者：庾振宇张江林高雅洁廖育林鲁艳红方畅宇刘芳禧谢雪肖健袁浩亮屠乃美聂军湖南省土壤肥料研究所湖南长沙410125 湖南农业大学农学院湖南长沙410128 农业农村部湖南耕地保育科学观测实验站湖南长沙410125

为探究^(60)Co-γ射线对紫云英(Astragalus sinicus)种子的诱变效应,明确适合紫云英翻压利用及生长的辐照剂量,本研究以紫云英种子为试验材料,采用不同^(60)Co-γ射线辐照剂量[0(CK)、300、500、700 Gy]处理种子,观察比较紫云英的养分... 详细信息

为探究^(60)Co-γ射线对紫云英(Astragalus sinicus)种子的诱变效应,明确适合紫云英翻压利用及生长的辐照剂量,本研究以紫云英种子为试验材料,采用不同^(60)Co-γ射线辐照剂量[0(CK)、300、500、700 Gy]处理种子,观察比较紫云英的养分吸收特性、发芽率和田间生长状况。结果表明,辐射处理可提高紫云英盛花期的氮(N)含量,500 Gy处理盛花期N含量最高。在等N投入量下,与CK相比,500 Gy处理的翻压量可减少2063 kg·hm^(−2),便于机械翻压操作。与CK相比,辐照处理的出苗数、株高等多项指标均呈降低趋势,高辐照剂量700 Gy处理的鲜草产量和种子产量均显著降低(P<0.05),500 Gy处理的各项指标与CK最为接近,且相差较小。综上,用500 Gy的^(60)Co-γ射线辐照紫云英种子,提高了单位质量的氮素含量,便于盛花期轻简翻压利用。

关键词： ^(60)Co-γ射线紫云英翻压量产量氮含量

维普期刊数据库