检索结果-南通市图书馆

The applied research present status and assignment on recycled material of concrete in Japan

在线全文

学校读者我要写书评

暂无评论

The applied research present status and assignment on recycl...

The Influence of Phlorotannins and Bromophenols on the Feeding Behavior of Marine Herbivorous Gastropod <i>Turbo cornutus</i>

首届全国再生混凝土研究与应用学术交流会

作者： KITATSUJI Masafumil tanaka reiji Miyagi University Faculty of Engineering Tohoku Institute of Technology

＜正＞Japan lacked resources is a large import country and also a large consuming *** it is turned society structure system of consumption goods stocked in domestic,which leads to 450 millions ton waste ***,because of continuing development of intermediate handling and recycled utilization technology,finally disposed waste materials approximately 30 millions ton. The quantity of concrete product is consumed 300 millions ton per year unprecedented,beau case of large scope,it is expected valid and large absorption industry of recycled *** molten slag from municipal solid waste and recycled aggregate,it is researched on performing concrete product and building structure,JIS is made,and it is expected *** purpose of this paper is to do a report on applied present status and future assignment of recycled material and building structure in Japan.

关键词： inorganic waste recycled aggregate molten slag from municipal solid waste(MSW slag) circumstance security precast concrete product reinforced concrete structure

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2014年第3期5卷 387-392页

作者： Toshiyuki Shibata Taiko Miyasaki Hideo Miyake reiji tanaka Shigeo Kawaguchi Department of Food Science and Technolo- gy National Fisheries University Yamaguchi Japan Faculty of Agriculture Kyushu University Fukuoka Japan Major of Life Sciences Graduate School of Bioresources Mie University Mie Japan

The influence of phlorotannins and bromophenols on the feeding behavior of marine herbivores was determined using bioassay of Turbo cornutus. It was found that phloroglucinol and its oligomers isolated from the brown alga Eisenia bicyclis (eckol, fucofuroeckol A, phlorofucofuroeckol A, dieckol, and 8,8’-bieckol) had a deterrent effect against feeding behavior of T. cornutus in the concentration of algal body, respectively. In the case of the examination of 0.1 mM concentration, although fucofuroeckol A and phlorofucofuroeckol A significantly reduced feeding by T. cornutus, phloroglucinol and 8,8’-bieckol did not show any significant influence on feeding behavior, and eckol and dieckol had stimulating activity. 2,4-Dibromophenol and 2,4,6-tribromophenol, which are major components of extracellular secretions from Eisenia and Ecklonia species, caused the death, the torpidity, and the decreased appetite of T. cornutus at the concentration of 0.1 mM. In addition, 2,4-dibromophenol had strong feeding deterrent activity at the concentration of 1 μM. These results indicate that phlorotannins and bromophenols act as chemical defense agents of brown algae against environmental stresses such as the herbivore attack.

关键词： Bromophenols Brown Algae Chemical Defenses Feeding Deterrent Eisenia bicyclis Phlorotannins Plant-Herbivore Interactions Turban Shell Turbo cornutus

Evaluation for Antioxidative Properties of Phlorotannins Isolated from the Brown Alga <i>Eisenia bicyclis</i>, by the H-ORAC Method

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

Food and Nutrition Sciences 2013年第8期4卷 78-82页

作者： Yohei Fujii reiji tanaka Hideo Miyake Yutaka Tamaru Mitsuyoshi Ueda Toshiyuki Shibata Japan Science and Technology Agency CREST Tokyo Japan Division of Applied Life Sciences Graduate School of Agriculture Kyoto University Kyoto Japan Major of Life Sciences Graduate School of Bioresources Mie University Mie Japan Major of Life Sciences Graduate School of Bioresources Mie University Mie Japan Japan Science and Technology Agency CREST Tokyo Japan

The antioxidative properties of phlorotannins isolated from the brown alga Eisenia bicyclis were measured using the H-ORAC (Hydrophilic Oxygen Radical Absorbance Capacity) method. The ORAC values of phloroglucinol and it’s oligomers: eckol, fucofuroeckol A, phlorofucofuroeckol A, dieckol, 8,8’-bieckol, were 2.57 ± 0.14, 4.97 ± 0.36, 9.82 ± 0.70, 8.97 ± 0.89, 10.22 ± 0.85, 8.62 ± 0.92 μmol Trolox equivalent/μmol, respectively. With the exception of eckol, the ORAC values of tested phlorotannins were higher than those of the well-known antioxidants (epigallocatechin gallate, resveratrol and L-ascorbic acid) used as positive controls. As a result of comparing with known ORAC values, it was found that the dieckol and fucofuroeckol A had stronger antioxidant activity than representative polyphenols (e.g., kaempferol, quercetin, myricetin and chlorogenic acid) derived from terrestrial plants.

关键词： Antioxidants Brown Alga Dieckol Eisenia bicyclis Fucofuroeckol A H-ORAC Assay Phlorotannins

Exploiting fly models to investigate rare human neurological disorders

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

Neural Regeneration Research 2025年第1期20卷 21-28页

作者： Tomomi tanaka Hyung-Lok Chung Department of Neurology Houston Methodist Research InstituteHoustonTXUSA Department of Neurology Weill Cornell Medical CollegeNew YorkNYUSA

Rare neurological diseases,while individually are rare,collectively impact millions globally,leading to diverse and often severe neurological *** attributed to genetic mutations that disrupt protein function or structure,understanding their genetic basis is crucial for accurate diagnosis and targeted *** investigate the underlying pathogenesis of these conditions,researchers often use non-mammalian model organisms,such as Drosophila(fruit flies),which is valued for their genetic manipulability,cost-efficiency,and preservation of genes and biological functions across evolutionary *** tools available in Drosophila,including CRISPR-Cas9,offer a means to manipulate gene expression,allowing for a deep exploration of the genetic underpinnings of rare neurological *** boasts a versatile genetic toolkit,rapid generation turnover,and ease of large-scale experimentation,making it an invaluable resource for identifying potential drug *** can expose flies carrying disease-associated mutations to various compounds,rapidly pinpointing promising therapeutic agents for further investigation in mammalian models and,ultimately,clinical *** this comprehensive review,we explore rare neurological diseases where fly research has significantly contributed to our understanding of their genetic basis,pathophysiology,and potential therapeutic *** discuss rare diseases associated with both neuron-expressed and glial-expressed *** cases include mutations in CDK19 resulting in epilepsy and developmental delay,mutations in TIAM1 leading to a neurodevelopmental disorder with seizures and language delay,and mutations in IRF2BPL causing seizures,a neurodevelopmental disorder with regression,loss of speech,and abnormal *** we explore mutations in EMC1 related to cerebellar atrophy,visual impairment,psychomotor retardation,and gain-of-function mutations in ACOX1 causing Mitchell ***-of-fun

关键词： ACOX1 Drosophila melanogaster glia lipid metabolism model organisms neuroinflammation neurologic disorders neuron rare disease VLCFA

在线全文

学校读者我要写书评

暂无评论

城市垃圾熔渣及其所取再生混凝土的研究

硅酸盐通报 2007年第4期26卷 705-709,783页

作者：崔正龙大芳贺義喜北迁政文田中礼治辽宁工程技术大学土木建筑工程学院阜新123000 东北工业大学建筑学科日本仙台9828577 宫城县农业短期大学农业土木科日本仙台9820215

为了研究城市垃圾熔渣细骨料以及废弃混凝土粗骨料再生利用的可能性,本文着眼于城市垃圾熔渣再生混凝土的耐久性能,试验以100%再生粗骨料以及垃圾熔渣细骨料替代天然碎石和砂子制备再生混凝土.探讨了城市垃圾熔渣再生混凝土的耐久性能... 详细信息

为了研究城市垃圾熔渣细骨料以及废弃混凝土粗骨料再生利用的可能性,本文着眼于城市垃圾熔渣再生混凝土的耐久性能,试验以100%再生粗骨料以及垃圾熔渣细骨料替代天然碎石和砂子制备再生混凝土.探讨了城市垃圾熔渣再生混凝土的耐久性能之一抵抗冻融循环的能力。冻融循环试验用混凝土以水灰比0.45、0.65为变动因素。试验结果表明,城市垃圾熔渣再生混凝土(简称RS混凝土)试件的冻融循环抵抗性与粗、细骨料置换率为0%的普通混凝土(简称NN混凝土)试件相比,水灰比0.45、0.65时的耐久性指数分别降低7.9%和13.3%,但都能满足评价冻融循环抵抗性的最低指标。

关键词：城市垃圾熔渣再生混凝土耐久性指数冻融循环

在线全文

学校读者我要写书评

暂无评论

城市垃圾熔渣混凝土柱抗震性能的试验研究

工程抗震与加固改造 2007年第5期29卷 68-74页

作者：崔正龙大芳贺義喜北迁政文田中礼治辽宁工程技术大学土木建筑工程学院辽宁阜新123000 东北工业大学建筑学科日本仙台9828577 宫城县农业短期大学农业土木科日本仙台9820215

为了研究城市垃圾熔渣粗、细骨料在建筑结构上循环利用的可能性,本文着眼于力学性能方面,对城市垃圾熔渣钢筋混凝土柱以及对比用普通钢筋混凝土柱做了水平低周反复加载试验,研究了城市垃圾熔渣钢筋混凝土柱的破坏形式、承载能力、滞回... 详细信息

为了研究城市垃圾熔渣粗、细骨料在建筑结构上循环利用的可能性,本文着眼于力学性能方面,对城市垃圾熔渣钢筋混凝土柱以及对比用普通钢筋混凝土柱做了水平低周反复加载试验,研究了城市垃圾熔渣钢筋混凝土柱的破坏形式、承载能力、滞回特性以及耗能等性能。试验结果表明,在柱轴压比相同,混凝土强度较接近的情况下,城市垃圾熔渣钢筋混凝土柱在破坏形式、承载能力以及耗能能力等方面与普通钢筋混凝土柱相比并没有明显降低,表现出良好的变形能力以及吸能能力;在抗震性能方面,单从结构力学角度来看,城市垃圾熔渣混凝土应用在建筑结构是上完全可行的。

关键词：城市垃圾熔渣钢筋混凝土柱滞回曲线抗震性能

再生混凝土耐久性的试验研究Ⅲ再生混凝土的干燥收缩试验

在线全文

学校读者我要写书评

暂无评论

科学技术与工程 2006年第23期6卷 4801-4805页

作者：崔正龙大芳賀義喜北迁政文田中礼治辽宁工程技术大学土木建筑工程学院阜新123000 东北工业大学建筑学科日本仙台9828577 宫城县农业短期大学农业土木科日本仙台9820215

再生混凝土耐久性的试验研究系列探讨了再生混凝土抵抗冻融循环能力以及抵抗中性化能力方面做了基础性试验研究,表明了再生混凝土在水灰比相对较小的情况下,抵抗冻融循环能力较好,而抗碳化能力较差。这反映了再生混凝土在耐久性能方面... 详细信息

再生混凝土耐久性的试验研究系列探讨了再生混凝土抵抗冻融循环能力以及抵抗中性化能力方面做了基础性试验研究,表明了再生混凝土在水灰比相对较小的情况下,抵抗冻融循环能力较好,而抗碳化能力较差。这反映了再生混凝土在耐久性能方面还存在着很多疑难点,着眼于再生混凝土耐久性能的另一方面,即对再生混凝土抵抗干燥收缩能力方面做了基础性试验研究。试验以100%再生骨料替代天然碎石和砂粒制备再生混凝土试件,在恒温(20±2)℃,恒湿相对湿度(60±5)%的试验室内使混凝土试件自由干燥收缩180d。试验结果,再生混凝土试件与普通混凝土试件相比,干燥收缩率大,特别是早期干燥,几乎达到了普通混凝土试件的2倍以上。

关键词：再生混凝土干燥收缩耐久性

再生混凝土耐久性的试验研究 Ⅰ.再生混凝土的冻融循环试验

在线全文

学校读者我要写书评

暂无评论

科学技术与工程 2006年第21期6卷 3512-3515页

在实验室预制C20普通混凝土,28d后用破碎机将其破碎筛选调配制成再生粗骨料与细骨料,以此再生骨料100%替代天然碎石和砂子制备再生混凝土,探讨了再生混凝土的耐久性能———抵抗冻融循环的能力。耐久性试验用混凝土水灰比质量分数分别为... 详细信息

在实验室预制C20普通混凝土,28d后用破碎机将其破碎筛选调配制成再生粗骨料与细骨料,以此再生骨料100%替代天然碎石和砂子制备再生混凝土,探讨了再生混凝土的耐久性能———抵抗冻融循环的能力。耐久性试验用混凝土水灰比质量分数分别为45%,65%。结果表明,100%再生混凝土(简称RR混凝土)试件的冻融循环抵抗性与粗、细骨料置换率为0%的普通混凝土(简称NN混凝土)试件相比,相对动弹性系数和耐久性系数分别降低6%和9%,但都能满足评价冻融循环抵抗性的最低指标。

关键词：再生混凝土耐久性系数冻融循环

同方期刊数据库

Magnetic resonance evaluations of biliary malignancy and condition at high-risk for biliary malignancy:Current status

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2013年第12期5卷 654-665页

作者： reiji Sugita Department of Radiology Sendai City Medical Center

Tumors of the biliary tree are relatively rare; but their incidence is rising worldwide. There are several known risk factors for bile duct cancers, and these are seem to be associated with chronic inflammation of the biliary epithelium. Herein, 2 risk factors have been discussed, primary sclerosing cholangitis and reflux of pancreatic juice into the bile duct, as seen in such as an abnor- mal union of the pancreatic-biliary junction because magnetic resonance imaging(MRI) is used widely and effectively in the diagnosis of these diseases. When biliary disease is suspected, MRI can often help dif- ferentiate between benignity and malignancy, stage tumors, select surgical candidates and guide surgical planning. MRI has many advantages over other modali- ties. Therefore, MRI is a reliable noninvasive imaging tool for diagnosis and pre-surgical evaluation of bile duct tumors. Nowadays remarkable technical advances in magnetic resonance technology have expanded the clinical applications of MRI in case of biliary diseases. In this article, it is also discussed how recent develop- ments in MRI contributes to the diagnosis of the bile duct cancer and the evaluation of patients with risk fac- tors affecting bile duct cancer.

关键词： Biliary Magnetic resonance imaging Malig-nancy Primary sclerosing cholangitis Pancreas juice Reflux