检索结果-南通市图书馆

中亚温带沙漠苔藓C、N、P、K化学计量特征与土壤养分和环境的关系

在线全文

学校读者我要写书评

暂无评论

Journal of Plant Ecology 2023年第3期16卷 1-18页

作者： Yong-Gang Li Xiao-Bing zhou Yongxing Lu yuan-Ming Zhang State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China

前期研究发现,荒漠区苔藓的化学计量特性受苔藓斑块大小、灌木和微环境的影响。研究苔藓在不同空间分布区的化学计量特性,对理解苔藓的生长和适应策略具有重要意义。本研究选取古尔班通古特沙漠生物结皮中的优势苔藓(齿肋赤藓,Syntrichi... 详细信息

前期研究发现,荒漠区苔藓的化学计量特性受苔藓斑块大小、灌木和微环境的影响。研究苔藓在不同空间分布区的化学计量特性,对理解苔藓的生长和适应策略具有重要意义。本研究选取古尔班通古特沙漠生物结皮中的优势苔藓(齿肋赤藓,Syntrichia caninervis)和苔藓斑块下的土壤,测定了不同沙丘和采样区苔藓植物和土壤的化学计量特征与计量比。研究结果表明,除苔藓C含量,苔藓化学计量特征和土壤有效养分在沙漠不同区域显著不同。苔藓植物地上与地下部分N、P、K元素的异速生长指数分别为0.251、0.389、0.442。苔藓地上部分和地下部分的N、P异速生长指数分别为0.71和0.84。苔藓的化学计量特征在地上和地下部分分布不均。此外,苔藓N、P、K元素受年均降水量、经度和土壤养分的影响。苔藓植物的养分含量受空间分布、年均温度、年均降水量和土壤养分的影响,而苔藓的生长受N限制。本研究提供了不同空间尺度下苔藓的C、N、P、K的化学计量特征,并探讨了它们与环境变量的关系,有助于了解沙漠中N、P、K的营养模式和利用策略,以及它们对全球气候变化的潜在响应。

关键词：生态化学计量特征苔藓土壤养分空间尺度环境因子齿肋赤藓(Syntrichia caninervis) 古尔班通古特沙漠

Investigating the Mechanism of Qu Du Qiang Fei 1 Hao Fang Formula against Coronavirus Disease 2019 Based on Network Pharmacology Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2024年第1期10卷 93-103页

作者： yuan-Hua Wang He-Yang zhou Jin-Yun Ma Gui-Qing Ding Hua Yu Yong-Sheng Jin Xiao-Dong Cheng Institute of Clinical Immunology Yue-Yang Hospital of Integrative MedicineShanghai University of Traditional Chinese MedicineShanghaiChina School of Pharmacy Naval Medical UniversityShanghaiChina

Objective:Qu Du Qiang Fei 1 Hao Fang(QDQF1)is a novel Chinese herbal medicine formula used to treat coronavirus disease 2019(COVID-19).However,the pharmacological mechanisms of action of QDQF1 remain *** objective of this study was to identify the effective ingredients and biological targets of QDQF1 for COVID-19 *** and Methods:The effective ingredients and mechanisms of action of QDQF1 were analyzed by using network pharmacology methods,which included an analysis of the effective ingredients and corresponding targets,COVID-19-related target acquisition,compound-target network analyses,protein-protein interaction network analysis,Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO)enrichment analyses,and molecular docking ***:In total,288 effective QDQF1 ingredients were *** identified 51 core targets from the 148 targets through an overlap between putative QDQF1 targets and COVID-19-related *** key components,including formononetin,kaempferol,luteolin,naringenin,quercetin,and wogonin were identified through component-target network *** functional enrichment analysis of the core targets revealed 1296 items,while KEGG pathway enrichment analysis identified 148 signaling *** central targets(CCL2,CXCL8,IL1B,IL6,MAPK1,MAPK3,MAPK8,STAT3,and TNF)related to the COVID-19 pathway were identified in the KEGG pathway enrichment ***,molecular docking analysis suggested that the docking scores of the six key components to the nine central targets were better than those to ***:QDQF1 may regulate multiple immune-and inflammation-related targets to inhibit the progression of severe acute respiratory syndrome coronavirus 2,and thus,may be suitable for the treatment of COVID-19.

关键词： Coronavirus disease 2019 molecular docking molecular mechanism network pharmacology Qu Du Qiang Fei 1 Hao Fang formula

Enhanced recovery of zinc and lead by slag composition optimization in rotary kiln

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2022年第9期32卷 3110-3122页

作者： Hong-fu LIN Wei WENG Shui-ping zhong Guan-zhou QIU School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores Zijin Mining Group Co.Ltd.Shanghang 364200China Zijin School of Geology and Mining Fuzhou UniversityFuzhou 350108China

High-efficiency recovery of Zn and Pb from silicon-rich zinc leaching residues is realized in a rotary *** by means of XRD,SEM,EDS and ICP reveal that the leaching residue contains 12.4 wt.%SiO_(2),16.1 wt.%Zn,and 7.4 wt.%*** analysis shows that metallic vapor of Zn and Pb can be easily generated from the zinc leaching residue at 1150-1250°C inside the rotary *** and melting points of 13 slag compositions were analyzed and three slag compositions(47wt.%SiO_(2)-23wt.%CaO-30wt.%FeO,40wt.%SiO_(2)-28wt.%CaO-32wt.%FeO,and 40wt.%SiO_(2)-30wt.%CaO-30wt.%FeO)possessed the desirable physical properties,with the melting point and viscosity in the range of 1150-1280°C and 0.2-0.5 Pa·s,*** industrial tests show that adopting the optimized slag composition can contribute to very high recovery rates of Zn and Pb(97.3%for Zn and 94.5%for Pb),corresponding to slags with very low average contents of Zn and Pb(0.51 wt.%Zn and 0.45 wt.%Pb).The National-Standard leaching tests of the water-quenched slags result in 1.82 mg/L Zn,~0.01 mg/L Cu,0.0004 mg/L As,~0.01 mg/L Cd,0.08 mg/L Pb,and~0.02 mg/L Hg in the leachate,verifying the detoxification of the zinc leaching residue at the same time.

关键词： zinc leaching residues metals recovery rotary kiln slag composition optimization detoxification

A Grammar Analysis Model for the Unified Multimedia Query Language

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology of China 2008年第3期6卷 317-322页

作者： zhong-Sheng Cao Zong-Da Wu yuan-Zhen Wang School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

The unified multimedia query language （UMQL） is a powerful general-purpose multimedia query language, and it is very suitable for multimedia information retrieval. The paper proposes a grammar analysis model to implement an effective grammatical processing for the language. It separates the grammar analysis ofa UMQL query specification into two phases： syntactic analysis and semantic analysis, and then respectively uses Backus-Naur form （EBNF） and logical algebra to specify both restrictive grammar rules. As a result, the model can present error guiding information for a query specification which owns incorrect grammar. The model not only suits well the processing of UMQL queries, but aLso has a guiding significance for other projects concerning query processings of descriptive query languages.

关键词： Grammar analysis query language query processing unified multimedia query language

0.05% atropine on control of myopia progression in Chinese school children: a randomized 3-year clinical trial

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2023年第6期16卷 939-946页

作者： Qin Zhu Guang-Yong Tang Zhi-Juan Hua Li-Ping Xue yuan zhou Jie-Ying Zhang Ying-Ting Zhu Xiao-Fan Zhang Department of Pediatric Ophthalmology Affiliated Hospital of Yunnan UniversityKunming 650021Yunnan ProvinceChina Department of Ophthalmology People’s Hospital of Xundian CountyKunming 655200Yunnan ProvinceChina BioTissue(Tissue Tech Inc.)Ocular Surface Centerand Ocular Surface Research&Education FoundationMiamiFL 33126USA

·AIM:To evaluate the effect of 0.05%atropine on the control of myopia for 2y(phase I)and on spherical equivalent refraction(SER)progression for 1y(phase II)after its withdrawal in Chinese myopic children.·METHODS:Totally 142 children with myopia were randomly assigned to the 0.05%atropine group or to the placebo *** phase I,children received 1 treatment for each eye *** phase II,the patients received no *** length(AL),SER,intraocular pressure(IOP)and atropine-related side effects were assessed at 6 months’intervals.·RESULTS:During phase I,the mean change of SER was-0.46±0.30 D in the atropine group,compared to-1.72±1.12 D in the placebo group(P0.05).Furthermore,the change in SER from the atropine group was 0.50±0.41 D,which was significantly lower than 0.72±0.60 D from placebo group,(P0.05).·CONCLUSION:The use of 0.05%atropine for two consecutive years may effectively control elongation of AL and thus progression of myopia,without significant SER progression 1y after atropine ***,treatment with 0.05%atropine daily for 2y is effective and safe.

关键词： atropine axial length spherical equivalent refraction children myopia

Anatomic isolated caudate lobectomy: Is it possible to establish a standard surgical flow?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第41期23卷 7433-7439页

作者： Yun Jin Liang Wang yuan-Quan Yu Dong-Er zhou Da-Ren Liu Jun-Jie Yang Shu-You Peng Jiang-Tao Li Department of General Surgery The Second Affiliated Hospital College of MedicineZhejiang University Department of General Surgery Xinchang People’s Hospital

AIM To establish the surgical flow for anatomic isolated caudate lobe resection. METHODS The study was approved by the ethics committee of the Second Affiliated Hospital Zhejiang University School of Medicine(SAHZU). From April 2004 to July 2014, 20 patients were enrolled who underwent anatomic isolated caudate lobectomy at SAHZU. Clinical and postoperative pathological data were analyzed. RESULTS Of the total 20 cases, 4 received isolated complete caudate lobectomy(20%) and 16 received isolated partial caudate lobectomy(80%). There were 4 caseswith the left approach(4/20, 20%), 6 cases with the right approach(6/20, 30%), 7 cases with the bilateral combined approach(7/20, 35%), 3 cases with the anterior approach(3/20, 15%), and the hanging maneuver was also combined in 2 cases. The median tumor size was 5.5 cm(2-12 cm). The median intraoperative blood loss was 600 m L(200-5700 m L). The median intra-operative blood transfusion volume was 250 m L(0-2400 m L). The median operation time was 255 min(110-510 min). The median post-operative hospital stay was 14 d(7-30 d). The 1-and 3-year survival rates for malignant tumor were 88.9% and 49.4%, respectively. CONCLUSION Caudate lobectomy was a challenging procedure. It was demonstrated that anatomic isolated caudate lobectomy can be done safely and effectively.

关键词： Caudate lobectomy Surgical flow Anatomic liver resection

Microstructure and Magnetization Investigations of Cu-Doping Effect on La_(2)CuO_(4+δ) Crystal

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 1997年第3期14卷 225-228页

作者： DONG Xiao-li ZHAO Bai-ru ZHAO zhong-xian LIU Wei zhou Lei XU Bo CHEN Hong CHE Guang-can NI Yong-ming YIN Bo LI Jing-wei ZHAO Li-hua XU zhong-yu National Laboratory for Superconductivity Institute of Physics&Center for Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080 Department of Physics Hunan UniversityChangsha 410012

Measurement and characterization were carried out on Cu-doped and undoped La_(2)CuO_(4+δ) samples prepared under the same *** magnetization measurement on the Cu-doped La_(2)CuO_(4+δ) sample shows coexistence of long-range antiferromagnetic order and superconductivity.A stripe-like structure was observed at room temperature on the ab-plane of Cu-doped La_(2)CuO_(4+δ) sample by transmission electron *** for the undoped La_(2)CuO_(4+δ) sample no such behavior or structure feature was *** this letter,these phenomena were discussed in terms of phase separation.

关键词： conditions. separation. letter

Rassf2 overexpression mediated by AAV promotes the supporting cell-to-hair cell transformation in the cochlea

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineered Regeneration 2023年第3期4卷 304-315页

作者： Liyan Zhang Jieyu Qi yuan Fang Fangzhi Tan Yinyi zhou Ziyu Zhang Qiuhan Sun Nianci Li Yideng Huang Jingwu Sun Renjie Chai State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologyAdvanced Institute for Life and HealthJiangsu Province High-Tech Key Laboratory for Bio-Medical ResearchSoutheast UniversityNanjing210096China Department of Otolaryngology The First Affiliated Hospital of Wenzhou Medical UniversityVillage ShangCaiOuhai DistrictWenzhou cityZhejiang province325000China Department of Otolaryngology Head and Neck Surgery the First Affiliated Hospital of University of Science and Technology of ChinaChina Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Institute for Stem Cell and Regeneration Chinese Academy of ScienceBeijingChina Beijing Key Laboratory of Neural Regeneration and Repair Capital Medical University100069 BeijingChina

Sensory hair cells are responsible for detecting and transmitting sound in the inner ear,and damage to HCs leads to hearing *** do not regenerate spontaneously in adult mammals,which makes the hearing loss ***,hair cells and supporting cells have the same precursors in the inner ear,and in newborn mice,the adjacent SCs can be activated by gene manipulation to differentiate into newly regenerated hair ***,we demonstrate the role of the Ras association domain family member 2(Rassf2)in supporting cell to hair cell trans-differentiation in the inner *** the AAV vector(AAV-ie)to upregulate Rassf2 expression promoted supporting cell division and hair cell production in cultured cochlear ***,AAV-Rassf2 enhanced the regenerative ability of Lgr5+SCs in the postnatal cochlea without impairing hearing,and this might due to the modulation of the Wnt,Hedgehog and Notch signaling ***,AAV-Rassf2 enhances cochlear supporting cell division and hair cell production in the neomycin injury *** summary,our results suggest that Rassf2 is a key component in HC regenerative repair,and gene modulation mediated by adeno-associated virus may be a promising gene therapy for hearing repair.

关键词： AAV Rassf2 Hair cell regeneration Cochlea Organoid

块体非晶合金微成形技术的研究进展及发展趋势

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

功能材料 2013年第15期44卷 2133-2137页

作者：李春燕寇生中赵燕春袁小鹏袁子洲兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室甘肃兰州730050 兰州理工大学有色金属合金及加工教育部重点实验室甘肃兰州730050

介绍了微成形技术的基本特点及主要研究领域,指出非晶合金材料是一种比较理想的微成形材料。综述了块体非晶合金材料应用到微成形领域的优点以及块体非晶微成形技术的最新研究进展,并阐述了块体非晶合金微成形技术的发展趋势,指出了新... 详细信息

介绍了微成形技术的基本特点及主要研究领域,指出非晶合金材料是一种比较理想的微成形材料。综述了块体非晶合金材料应用到微成形领域的优点以及块体非晶微成形技术的最新研究进展,并阐述了块体非晶合金微成形技术的发展趋势,指出了新的发展方向。

关键词：块体非晶合金(BMGs) 微成形技术非晶合金微型零件研究现状发展趋势