检索结果-南通市图书馆

Transcriptome changes in seeds during coleorhiza hair formation in rice

The Crop Journal 2022年第3期10卷 692-703页

作者： Tao Song anmrubaiyath bin rahman Debatosh Das Neng-Hui Ye Feng Yang Fu-Yuan Zhu Mo-Xian Chen Jian-Hua Zhang Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037JiangsuChina Shenzhen Research Institute The Chinese University of Hong Kon6Shenzhen 518057Guangdon6China Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China College of AgricultureHunan Agricultural UniversityChangsha 410128HunanChina Department of Biology Hong Kong Baptist UniversityKowloon 999077Hong Kon6China CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055Guangdon6China School of Life Sciences and State Key Laboratory of Agrobiotechnology The Chinese University of Hong Kon6Shatin 999077Hong Kon6China

Coleorhiza hairs are hairlike structures in seeds of the grass family(Poaceae).The molecular mechanisms underlying its formation are largely unknown,study on this topic will expand our understanding of the effects of water status on germination during rice(Oryza sativa L.)direct *** of Nipponbare were treated under two water conditions:in one,half of the seed surface was immersed in water and the other half was embryo side in air(EIA),and in the other,the whole seed was covered by water(CBW).Coleorhiza hairs formed only in EIA *** was used to identify the gene regulation during coleorhiza hair formation in EIA(***)embryos and *** displayed more transcriptome modulation even though smaller in size than the *** expressed genes(DEGs)were enriched in both primary and secondary metabolism and showed changes in abscisic acid,auxin,jasmonic acid,and salicylic acid *** enrichment data were positively correlated with gene expression changes in the affected metabolic functional *** presence of shorter coleorhiza hairs in an Os RHL1(Os06 g0184000,a coleorhiza hair formation regulation candidate gene)knockout mutant suggested that root hair-associated DEGs share molecular regulators that control the formation of coleorhiza hairs.

关键词： Embryo Endosperm Transcriptomics Metabolomics Hormone Coleorhiza hair

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

First Record of the Belemnite Genus Hibolithes from Late Jurassic–Early Cretaceous Turbidites from Malaysia

引用

Acta Geologica Sinica(English Edition) 2021年第2期95卷 333-341页

作者： Muhammad MURTAZA Abdul Hadi Abd rahman Joerg MUTTERLOSE Najiatun NAJLA Mazshurraiezal bin NASIR Department of Earth and Environmental Sciences Hazara UniversityMansehraKhyber Pakhtunkhwa 21120Pakistan Department of Geosciences Universiti Teknologi PETRONAS.Bandar Seri IskandarTronohPerak 31750Malaysia Department of Geology Mineralogy and GeophysicsRuhr-Universitat BochumUniversitatsstrasse 150Bochum 44801Germany

Discovery of the remains of belemnites referred to the Hibolithes *** the Jurassic–Cretaceous Pedawan Formation in Sarawak,on the island of Borneo(Malaysia)comprises four fragments of belemnite *** specimens are characterized by multiple fractures and vein *** fragments measuring about 130 mm are relatively intact,with only part of the alveolar region missing;a third piece represents the middle part of a rostrum,and the fourth specimen is too fragmentary to be assigned to any specific part of the *** on specimen characteristics,a Tithonian–Hauterivian age is *** sedimentary succession that yielded the belemnite material comprises thick shale that reflects the Te division of Bouma *** occurrence of a Hibolithes taxon in the uppermost Jurassic to lowermost Cretaceous Pedawan Formation sediments in Borneo reflects a near to global palaeobiogeographic distribution of this genus.

关键词： invertebrate paleontology Belemnitida Hibolithes turbidites Pedawan Formation Tithonian-Hauterivian Sarawak Borneo

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

AI-based small arms firing skill evaluation system in the military domain

引用

Defence Technology（防务技术） 2023年第11期29卷 164-180页

作者： Rezoanul Hafiz Chandan Nusrat Sharmin Muhaimin bin Munir Abdur Razzak Tanvir Ahamad Naim Tasneem Mubashshira Mokhlesur rahman Department of Computer Science and Engineering Military Institute of Science and TechnologyDhakaBangladesh

Evaluation system of small arms firing has an important effect in the context of military domain. A partially automated evaluation system has been conducted and performed at the ground level. Automation of such system with the inclusion of artificial intelligence is a much required process. This papers puts focus on designing and developing an AI-based small arms firing evaluation systems in the context of military environment. Initially image processing techniques are used to calculate the target firing score. Additionally, firing errors during the shooting have also been detected using a machine learning algorithm. However, consistency in firing requires an abundance of practice and updated analysis of the previous results. Accuracy and precision are the basic requirements of a good shooter. To test the shooting skill of combatants, firing practices are held by the military personnel at frequent intervals that include 'grouping' and 'shoot to hit' scores. Shortage of skilled personnel and lack of personal interest leads to an inefficient evaluation of the firing standard of a firer. This paper introduces a system that will automatically be able to fetch the target data and evaluate the standard based on the fuzzy *** it will be able to predict the shooter performance based on linear regression ***, it compares with recognized patterns to analyze the individual expertise and suggest improvements based on previous values. The paper is developed on a Small Arms Firing Skill Evaluation System, which makes the whole process of firing and target evaluation faster with better accuracy. The experiment has been conducted on real-time scenarios considering the military field and shows a promising result to evaluate the system automatically.

关键词： Machine learning Processing Firing system Artificial intelligence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A compact transmit/receive switch for 2.4 GHz reader-less active RFID tag transceiver

引用

Journal of Central South University 2015年第2期22卷 546-551页

作者： Mohammad Arif Sobhan Bhuiyan Mamun bin Ibne Reaz Jubayer Jalil Labonnah Farzana rahman Tae Gyu Chang Department of Electrical Electronic and Systems Engineering Universiti Kebangsaan Malaysia43600 UKM Bangi Selangor Malaysia School of Electrical and Electronics Engineering Chung-Ang University

Radio frequency identification(RFID) is a ubiquitous identification technology nowadays. An on-chip high-performance transmit/receive(T/R) switch is designed and simulated in 0.13-μm CMOS technology for reader-less RFID tag. The switch utilizes only the transistor width and length(W/L) optimization, proper gate bias resistor and resistive body floating technique and therefore,exhibits 1 d B insertion loss, 31.5 d B isolation and 29.2 d Bm 1-d B compression point(P1d B). Moreover, the switch dissipates only786.7 n W power for 1.8/0 V control voltages and is capable of switching in 794 fs. Above all, as there is no inductor or capacitor used in the circuit, the size of the switch is 0.00208 mm2 only. This switch will be appropriate for reader-less RFID tag transceiver front-end as well as other wireless transceivers operated at 2.4 GHz band.

关键词： body floating CMOS radio frequency identification(RFID) transmit/receive(T/R) switch transceiver

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Production of High Purity Multi-Walled Carbon Nanotubes from Catalytic Decomposition of Methane

引用

Journal of Natural Gas Chemistry 2006年第4期15卷 266-270页

作者： Kong Bee Hong Aidawati Azlin binti Ismail Mohamed Ezzaham bin Mohd Mahayuddin Abdul rahman Mohamed Sharif Hussein Sharif Zein School of Chemical Engineering Engineering CampusUniversiti Sains Malaysia14300 Nibong TebalSeberang Perai SelatanPulau PinangMalaysia

Acid-based purification process of multi-walled carbon nanotubes （MWNTs） produced via catalytic decomposition of methane with NiO/TiO2 as a catalyst is described. By combining the oxidation in air and the acid refluxes, the impurities, such as amorphous carbon, carbon nanoparticles, and the NiO/TiO2 catalyst, are eliminated. Scanning electron microscopy （SEM） and transmission electron microscopy （TEM） images confirm the removal of the impurities. The percentage of the carbon nanotubes purity was analyzed using thermal gravimetric analysis （TGA）. Using this process, 99.9 wt% purity of MWNTs was obtained.

关键词： multi-walled carbon nanotubes purification acid refluxes oxidation methane decomposition

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Blockchain-Enabled Cybersecurity Provision for Scalable Heterogeneous Network:A Comprehensive Survey

引用

Computer Modeling in Engineering & Sciences 2024年第1期138卷 43-123页

作者： Md.Shohidul Islam Md.Arafatur rahman Mohamed Ariff bin Ameedeen Husnul Ajra Zahian binti Ismail Jasni Mohamad Zain Faculty of Computing Universiti Malaysia PahangKuantan26600Malaysia School of Engineering Computing&Mathematical SciencesUniversity ofWolverhamptonWolverhamptonUK Institute for Big Data Analytics and Artificial Intelligence(IBDAAI) Komplek Al-KhawarizmiUniversiti Teknologi MARAShah AlamSelangor40450Malaysia

Blockchain-enabled cybersecurity system to ensure and strengthen decentralized digital transaction is gradually gaining popularity in the digital era for various areas like finance,transportation,healthcare,education,and supply chain *** interactions in the heterogeneous network have fascinated more attention due to the authentication of their digital application ***,the exponential development of storage space capabilities across the blockchain-based heterogeneous network has become an important issue in preventing blockchain distribution and the extension of blockchain *** is the biggest challenge of data integrity and scalability,including significant computing complexity and inapplicable latency on regional network diversity,operating system diversity,bandwidth diversity,node diversity,etc.,for decision-making of data transactions across blockchain-based heterogeneous *** security and privacy have also become the main concerns across the heterogeneous network to build smart IoT *** address these issues,today’s researchers have explored the potential solutions of the capability of heterogeneous network devices to perform data transactions where the system stimulates their integration reliably and securely with *** key goal of this paper is to conduct a state-of-the-art and comprehensive survey on cybersecurity enhancement using blockchain in the heterogeneous *** paper proposes a full-fledged taxonomy to identify the main obstacles,research gaps,future research directions,effective solutions,andmost relevant blockchain-enabled cybersecurity *** addition,Blockchain based heterogeneous network framework with cybersecurity is proposed in this paper tomeet the goal of maintaining optimal performance data transactions among ***,this paper provides an in-depth description based on the critical analysis to overcome the existing work gaps for future research where it

关键词： Blockchain cybersecurity data transaction diversity heterogeneous

来源：

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

Jurassic-Cretaceous Stratigraphy of Malaysia

引用

Open Journal of Geology 2019年第10期9卷 668-670页

作者： Mat Niza bin Abdul rahman Technical Services Division Department of Mineral and Geoscience Malaysia Ipoh Perak Malaysia

In Peninsular Malaysia, the Jurassic-Cretaceous sequences are represented by continental deposits in several isolated basins. Generally, the sequences are characterised by the fining upward sequences, comprising reddish brown to red siltstone, sandstone and conglomerate often interpreted as molasse sequences. In Sabah and Sarawak, the Jurassic-Cretaceous sequences are represented by the marine deposits comprising argillaceous, some arenaceous and calcareous rocks and associated chert, lava, and pyroclastics.

关键词： Jurassic-Cretaceous Peninsular Malaysia Continental Deposits Sabah and Sarawak Marine Deposits

来源：

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

Improving the Compatibility of Biodegradable Poly (Lactic Acid) Toughening with Thermoplastic Polyurethane (TPU) and Compatibilized Meltblown Nonwoven

引用

Open Journal of Composite Materials 2022年第1期12卷 1-15页

作者： Md Obaidur rahman Feichao Zhu bin Yu College of Textile Science and Engineering Zhejiang Provincial Key Laboratory of Industrial Textile Materials and Manufacturing Technology Zhejiang Sci-Tech University Hangzhou China

Poly (Lactic Acid) (PLA) is a biodegradable polymer which originates from natural resources such as corn and starch, offering excellent strength, biodegradability, nevertheless its inherent brittleness and low impact resistance properties have limited its application. On the other hand, Thermoplastic Polyurethane (TPU) has high toughness, durability and flexibility, which is one of the most potential alternatives for enhancing the flexibility and mechanical strength of Poly (Lactic Acid) (PLA) by blending it with a compatibilizer. With the aim to improve the mechanical and thermal properties of

来源：

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

Phytopharmacological evaluation of ethanol extract of Sida cordifolia ***

引用

Asian Pacific Journal of Tropical Biomedicine 2014年第1期4卷 18-24页

作者： Mohammad Abdul Motalib Momin Sm Faysal Bellah Sarder Mohammad Raussel rahman Ahmed Ayedur rahman Gazi Mohammad Monjur Murshid Sarder Mohammad Saker Billah Talha bin Emran Department of Pharmacy Jahangirnagar University Department of Clinical Pharmacy and Pharmacology Dhaka University Pharmacy Discipline Life Science SchoolKhulna University Department of Chemistry Gort.M.M.University College Department of Pharmacy BGC Trust University

Objective:To investigate the phytochemical screening(group determination)and selected pharmacological activities(antioxidant,antimicrobial and analgesic activity)of the plant Sida cordifolia Linn(***).Methods:Eighty percent concentrated ethanol extract of the roots was *** identify the chemical constituents of plant extract standard procedures were *** phytochemical screening the crude extract was tested for the presence of different chemical groups like reducing sugar,tannins,saponins,steroids,flavonoids,gums,alkaloids and *** antioxidant property of ethanolic extract of *** was assessed by DPPH free radical scavenging *** activity of the extract was tested using the model of acetic acid induced writhing in *** sodium is used as reference standard drug for the analgesic activity test Antibacterial activity of plant extract was carried out using disc diffusion method with five pathogenic bacteria comparison with kanamycin as a ***:Phytochemical analysis of the ethanolic extract of the roots of *** indicated the presence of reducing sugar,alkaloids,steroids and *** DPPH scavenging assay the IC_(50)value was found to be 50 ug/mL which was not comparable to the standard ascorbic *** crude extract produced 44.3%inhibition of writhing at the dose of 300 mg/kg body weight which is statistically significant(P>0.001).The in vitro antimicrobial activity of the ethanol extract of the roots of *** showed no antimicrobial activity against five types of *** experiment was conducted only with five species of bacteria as test species,which do not at all indicate the total inactivity against ***:The obtained results provide a support for the use of this plant in traditional medicine but further pharmacological studies are required.

关键词： Antioxidant Antimicrobial Analgesic DPPH Phytochemical screening

来源：

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

Molecular characterization of sweet potato(Ipomoea batatas[L.]Lam)germplasms for desirable traits by using simple sequence repeats markers

引用

BIOCELL 2023年第1期47卷 227-237页

作者： KHANDAKAR ABUMDMOSTAFIZAR rahman ABDUL SHUKOR JURAIMI MDREZWAN MOLLA MUHAMMAD ASYRAFMD HATTA ZULKEFLY bin SULAIMAN SHAMIMA SULTANA AHMED GABER BENUKAR BISWAS AKBAR HOSSAIN Tuber Crop Research Centre Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Department of Crop Science Faculty of AgricultureUniversiti Putra MalaysiaUPMKuala Lumpur43400Malaysia Plant Genetic Resources Centre Bangladesh Agricultural Research InstituteGazipur1701Bangladesh Department of Agriculture Technology Faculty of AgricultureUniversiti Putra MalaysiaUPMKuala Lumpur43400Malaysia Regional Agricultural Research Station Bangladesh Agricultural Research InstituteCumilla3500Bangladesh Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Agronomy Bidhan Chandra Krishi ViswavidyalayaNadiaWB741252India Division of Agronomy Bangladesh Wheat and Maize Research InstituteDinajpur5200Bangladesh

Every breeding program that aims to create new and improved cultivars with desired traits mostly relies on information related to genetic ***,molecular characterization of germplasms is important to obtain target cultivars with desirable *** potato[Ipomoea batatas(L.)Lam]is widely considered the world’s most important crop,with great diversity in morphological and phenotypic *** genetic diversity of 20 sweet potato germplasms originating from Bangladesh,CIP,Philippines,Taiwan,and Malaysia were compared,which was accomplished by genetic diversity analysis by exploring 20 microsatellite DNA markers for germplasm characterization and *** information was effective in differentiating or clustering the sweet potato genotypes.A total of 64 alleles were generated using the 20 primers throughout the 20 germplasm samples,with locus IBS97 having the highest number of alleles(5),whereas locus IbU33 had the fewest alleles(2).The alleles varied in size from 105(IbU31)to 213 base pairs(IBS34).The Polymorphism Information Content(PIC)values for the loci IbL46 and IBS97 varied from 0.445 to ***97 has the highest number of effective alleles(3.704),compared to an average of *** average Shannon’s diversity index(H)was 1.003,ranging from 0.673 in IbU3 to 1.432 in *** value of gene flow(Nm)varied between 0.000 and 0.005,with an average of 0.003,whereas genetic differentiation(FST-values)ranged between 0.901 and *** sweet potato germplasm included in this study had a broad genetic ***1 ***9 and SP12 ***18 germplasm pairings had the greatest genetic distance(GD=0.965),while SP1 ***2 germplasm couples had the least genetic diversity(GD=0.093).Twenty genotypes were classified into two groups in the UPGMA dendrogram,with 16 genotypes classified as group“A”and the remaining four genotypes,SP10,SP18,SP19,and SP20,classified as group“B.”According to cluster analysis,the anticipated heterozygosity(gene diversity)of Nei

关键词： Sweet potato Simple sequence repeats(SSRs) Genetic diversity Dendrogram

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：