检索结果-南通市图书馆

Seed's awakening: Unveiling the MKK3-MPK7- ERF4 module in dormancy-to-germination transition

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2023年第11期16卷 1730-1732页

作者： Vishal Varshney Manoj majee National Institute of Plant Genome Research Aruna Asaf Ali MargNew Delhi 110067India

Seed dormancy is nature's strategic pause in the plant life cycle,a purposeful interlude during which a seed,poised on the cusp of potential growth,bides its time in a state of *** period of dormancy is a crucial adaptation,allowing the seed to withstand unfavorable environmental conditions and synchronize germination with optimal circumstances for growth and survival(Nee et al.,2017).Dormancy is orchestrated by a complex interplay of genetic,physiological,and environmental factors,including phytohormones like abscisic acid and gibberellins(GAs),as well as specific regulators like DELAY OF GERMINATION1 and others(Née et al.,2017;Liu et al.,2020).

关键词： dormancy germination strategic

Artificial Seed Production of Tylophora indica for Interim Storing and Swapping of Germplasm

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2017年第1期3卷 41-46页

作者： Saikat Gantait Joshitha Vijayan Adity majee Department of Genetics and Plant Breeding Faculty of AgricultureBidhan Chandra Krishi Viswavidyalaya Department of Agricultural Biotechnology Faculty Centre for Integrated Rural Development and ManagementSchool of Agriculture and Rural DevelopmentRamakrishna Mission Vivekananda University

Our research work demonstrates the single bead alginate-encapsulation, interim storing and conversion of Tylophora indica(Burm. Fil.) *** effective encapsulation of in vitro nodal segments [(4 ± 1) mm long], ensuing in sphere-shaped artificial seeds of similar morphology, was achieved through 75 mmol·L^(-1)calcium chloride(CaCl_2 · 2H_2O) plus 3%(w/v) Na-alginate with 93.3% conversion frequency. The earliest conversion(within 7 days of incubation) of artificial seeds occurred in half-strength liquid Murashige and Skoog medium. Among the three different temperature regimes [(5 ± 1) °C,(15 ± 1) °C, and(25 ± 1) °C], storage of artificial seeds at(15 ± 1) °C executed the highest frequency of conversion(90%) after 15 days of storage. Lengthier storage significantly reduced the conversion frequency of artificial seeds irrespective of storage temperature. Nevertheless, the conversion frequency after 30 days of storage at(15 ± 1) °C was recorded at 70% without further decline even following45 days of storage, which evidently suggests that lower temperature(15 ± 1) °C is apt for storage and subsequent conversion of T. indica artificial seeds. The present protocol could be expedient for short-term storing and swapping of T. indica germplasms between national and international laboratories.

关键词： Tylophora indica calcium chloride conversion encapsulation germplasm swap Na-alginate nodal segment

All-carbon nanotube diode and solar cell statistically formed from macroscopic network

在线全文

学校读者我要写书评

暂无评论

Nano Research 2015年第9期8卷 2800-2809页

作者： Albert G. Nasibulin adinath M. Funde Ilya V. Anoshkin Igor A. Levitskyt kolkovo Institute of Science and Technology 100 Novaya str Skolkovo Moscow Region 143025 Russia Department of Material Science Saint-Petersburg State Polytechnical University Polytechnicheskaya 29 Saint-Petersburg 195251 Russia Department of Applied Physics Aalto University School of Science Puumiehenkuja 2 Espoo 00075 Finland School of Energy Studies Savitribai Phule Pune University Ganeshkhind Pune-411007 India Department of Chemistry University of Rhode Island R102881 USA Emitech Inc. Fall River MA 02720 USA

Schottky diodes and solar cells are statistically created in the contact area between two macroscopic films of single-walled carbon nanotubes （SWNTs） at the junction of semiconducting and quasi-metallic bundles consisting of several high quality tubes. The n-doping of one of the films allows for photovoltaic action, owing to an increase in the built-in potential at the bundle-to-bundle interface. Statistical analysis demonstrates that the Schottky barrier device contributes significantly to the I-V characteristics, compared to the p-n diode. The upper limit of photovoltaic conversion efficiency has been estimated at N20%, demonstrating that the light energy conversion is very efficient for such a unique solar cell. While there have been multiple studies on rectifying SWNT diodes in the nanoscale environment, this is the first report of a macroscopic all-carbon nanotube diode and solar cell.

关键词： all-carbon nanotube solarcell Schottky diode,carbon nanotube diode,carbon nanotube bundles

Study on Graphene Based Next Generation Flexible Photodetector for Optical Communication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Graphene 2018年第2期7卷 9-16页

作者： Kanishka Majumder Devesh Barshilia Subimal majee Academy of Technology Maulana Abul Kalam Azad University of Technology Kolkata India CSIR-Central Electronics Engineering Research Institute (CEERI) Pilani India

We report on the efficient photodetection (PD) properties of graphene based p-i-n photodetector, where all the three layers are either single or multilayer graphene sheets. We report the bandwidth and responsivity performance of the device. This simple structure paves the way for the next generation flexible wireless communication systems. A theoretical model is used to study the carrier distribution and current in a graphene based p-i-n photodetector system.

关键词： Graphene Photodetector Flexible Electronics

Low substrate temperature deposition of transparent and conducting ZnO:Al thin films by RF magnetron sputtering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2016年第4期37卷 24-31页

作者： Ravindra Waykar Amit Pawbake Rupali Kulkarni Ashok Jadhavar adinath Funde Vaishali Waman Rupesh Dewan Habib Pathan Sandesh Jadkar School of Energy Studies Savitribai Phule Pune UniversityPune 411007India Modern College of Arts Science and CommerceShivajinagarPune 411 005India Department of Physics Savitribai Phule Pune UniversityPune 411 007India

Transparent and conducting Al-doped ZnO（ZnO：Al） films were prepared on glass substrate using the RF sputtering method at different substrate temperatures from room temperature（RT） to 200 ℃. The structural,morphological, electrical and optical properties of these films were investigated using a variety of characterization techniques such as low angle XRD, Raman spectroscopy, X-ray photoelectron spectroscopy（XPS）, field-emission scanning electron microscopy（FE-SEM）, Hall measurement and UV–visible spectroscopy. The electrical properties showed that films deposited at RT have the lowest resistivity and it increases with an increase in the substrate temperature whereas carrier mobility and concentration decrease with an increase in substrate temperature. Low angle XRD and Raman spectroscopy analysis reavealed that films are highly crystalline with a hexagonal wurtzite structure and a preferred orientation along the c-axis. The FE-SEM analysis showed that the surface morphology of films is strongly dependent on the substrate temperature. The band gap decreases from 3.36 to 3.29 e V as the substrate temperature is increased from RT to 200 ℃. The fundamental absorption edge in the UV region shifts towards a longer wavelength with an increase in substrate temperature and be attributed to the Burstein-Moss shift. The synthesized films showed an average transmission（〉 85%） in the visible region, which signifies that synthesized ZnO：Al films can be suitable for display devices and solar cells as transparent electrodes.

关键词： ZnO thin film substrate temperature optical properties

Low temperature chemical sintering of inkjet-printed Zn nanoparticles for highly conductive flexible electronic components

在线全文

学校读者我要写书评

暂无评论

npj Flexible Electronics 2021年第1期5卷 115-122页

作者： Subimal majee Mikael C.F.Karlsson Pawel Jerzy Wojcik Anurak Sawatdee Mohammad Yusuf Mulla Naveed ul Hassan Alvi Peter Dyreklev Valerio Beni David Nilsson RISE Research Institutes of Sweden NorrköpingSweden.2Energy and Environment Science and TechnologyIdaho National LaboratoryIdaho FallsIDUnited States.3redoxme ABResearch&Development DepartmentNorrköpingSweden

This study illustrates an innovative way to fabricate inkjet-printed tracks by sequential printing of Zn nanoparticle ink and curing ink for low temperature in situ chemical *** chemical curing in place of standard sintering methods leads to the advantages of using flexible substrates that may not withstand the high thermal budgets of the standard methods.A general formulation engineering method is adopted to produce highly concentrated Zn ink which is cured by inkjet printing an over-layer of aqueous acetic acid which is the curing *** experimental results reveal that a narrow window of acid concentration of curing ink plays a crucial role in determining the electrical properties of the printed Zn *** conductive(~10^(5)S m^(−1))and mechanically flexible printed Zn features are *** addition,from systematic material characterization,we obtain an understanding of the curing ***,a touch sensor circuit is demonstrated involving all-Zn printed conductive tracks.

关键词： nanoparticles conductive curing

Substrate temperature dependent studies on properties of chemical spray pyrolysis deposited CdS thin films for solar cell applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2017年第2期38卷 5-14页

作者： Kiran Diwate Amit Pawbake Sachin Rondiya Rupali Kulkarni Ravi Waykar Ashok Jadhavar Avinash Rokade adinath Funde Kakasaheb Mohite Manish Shinde Habib Pathan Rupesh Devan Sandesh Jadkar School of Energy Studies Savitribai Phule Pune University Pune 411007 India C. T. Bora College Shirur Pune 412210 India Centre for Materials for Electronics Technology (C-MET) Pashan Road Pune 411008 India Department of Physics Savitribai Phule Pune University Pune 411007 India

Thin films of CdS have been prepared by chemical spray pyrolysis by spraying precursor solution directly onto soda lime glass（SLG） substrates. Influence of substrate temperature on structural, optical, morphological and electrical properties have been investigated by using various techniques such as low angle X-ray diffraction（XRD）, Raman spectroscopy, X-ray photoelectron spectroscopy（XPS）, field emission scanning electron microscopy（FESEM）, atomic force microscopy（AFM）, transmission electron microscopy（TEM）, UV–visible spectroscopy photoluminescence（PL） spectroscopy etc. Formation of CdS has been confirmed by low angle XRD,Raman spectroscopy and XPS analysis. XRD pattern showed that CdS films are polycrystalline, have hexagonal structure and prefer orientation of crystallites shifts from（101） to（002） with increase in substrate *** spectroscopy revealed that exciton-phonon coupling depends on substrate temperature and hence on crystallite size. Optical band gap increased from 2.43 to 2.99 eV when substrate temperature increased from 325 to 475 ℃. Transmittance of the film also showed an increasing trend from 52% to 80% with increase in substrate temperature. Such high band gap and transmittance values of CdS films prepared at 475℃ make it a useful window material in CdS/CdTe and CdS/Cu_2S heterojunction solar cells.

关键词： thin films CdS chemical spray pyrolysis FESEM Raman spectroscopy photoluminescence

Hydroxy Propyl Methyl Cellulose： Different Aspects in Drug Delivery

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmacy and Pharmacology 2016年第8期4卷 381-385页

作者： Tamasree Majumder Gopa Roy Biswas Sutapa Biswas majee Department of Pharmaceutical Technology NSHM Knowledge Campus-Group of Institutions Kolkata 700140 West Bengal India

Among the various research works going on nowadays, designing of controlled release dosage form is of great importance. For the development of suitable controlled release dosage form, a proper matrix needs to be formed from which the drug release generally occur by polymer swelling, polymer erosion, drug dissolution/diffusion mechanism. HPMC （hydroxy propyl methyl cellulose）, also known as hypromellose, is one of the best known cellulosic polymers used in the development of controlled released drug delivery. It is available in various grades. Cellulosic polymers are ingredients that contain units linked together which help to retain water. Due to its high water absorptive capacity, it acts as an excellent hydrophilic gel forming polymer. HPMC generally hydrates on the outer surface to form a gelatinous layer which is critical to prevent wetting and rapid drug release from the matrices. If the drug is sparingly soluble in the system, the release of drug from the system is slow and helps in formulation of controlled release dosage form. In the ophthalmic dosage form, HPMC is used as a matrix that swells and expands after absorbing water and expand the thickness of the tear film.

关键词： HPMC hypromellose hydrophilic controlled released dosage form.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

用模型计算北海原油的石蜡沉积量

世界石油科学 1992年第3期 82-90页

作者： majee.,A 安家荣