检索结果-南通市图书馆

Graphene oxide-coated microbottle resonators for relative humidity sensing

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年第7期20卷 400-405页

作者： Huda Adnan Zain Malathy Batumalay Md Ashadi Md Johari Hazli Rafis Abdul Rahim s.laiman wadi harun Department of Electrical Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Data science and Information Technology INTI International UniversityNilai 71800Malaysia1 Faculty of Electrical and Electronic Engineering Technology Universiti Teknikal Malaysia MelakaMelaka 76100Malaysia Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia MelakaMelaka 76100Malaysia

Graphene oxide(GO)is a 2D coating material used to improve fiber optics sensors’response to relative *** resonators(MBRs)have garnered more attention as sensing media *** MBR with a 190μm diameter was coated with ***,tapered fiber light coupling was used to investigate the relative humidity sensing performance in the range of 35—70%RH at 25℃.The MBR showed a higher Q factor before and after GO *** sensitivity of 0.115 dB/%RH was recorded with the 190μm GO-coated MBR sample compared to a sensitivity of 0.022 dB/%RH for the uncoated MBR *** results show that the MBR can be used in fiber optic sensing applications for environmental sensing.

关键词： humidity oxide bottle

Q-switched giant pulsed erbium-doped all-fiber laser with V_(2)ZnC MAX phase saturable absorber

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年第6期20卷 321-329页

作者： Kawther M Musthafa Azura Hamzah Ooi Wei Ling Ahmad Haziq Aiman Rosol Norliza Mohamed s.laiman wadi harun Malaysia-Japan International Institute of Technology Universiti Teknologi MalaysiaKuala Lumpur 54100Malaysia Razak Faculty of Technology and Informatics Universiti Teknologi MalaysiaKuala Lumpur 54100Malaysia Department of Electrical Engineering University of MalayaKuala Lumpur 50603Malaysia1

MXenes,drawn from MAX phases,are special two-dimensional substances with numerous advantages in nonlinear optics,specifically in giant and ultrashort pulsed-laser ***_(3)C_(2)T_(x)and Ti_(2)CT_(x)nanosheets however rapidly deteriorate under ambient conditions,limiting their *** paper demonstrates how excellent modulation depth of one of the MAX phase compounds vanadium zinc carbide(V_2ZnC)makes it a brilliant saturable absorber(sA)in passively Q-switched all-fiber pulsed lasers,integrated such that a 16.73-μm V_(2)ZnC-polyvinyl alcohol(PVA)thin film acts as sA in the *** and non-saturable absorptions were found to be 13.2%and 10.47%,while saturation optical intensity and modulation depth were 6.25 k W/cm^(2)and 12.43%,respectively,illustrating the optical *** superiority of MAX-PVA,fabricated in four distinct ratios,was demonstrated by the fact that it self-starts a giant pulsed laser at pump power as low as 22.5 mW and firmly accomplished 120.6 kHz repetition rate with a pulse width of 2.08μ*** is a fine sA for the use of pulsed-laser production using all-fiber laser due to fabrication simplicity and great optical,thermophysical,and mechanical qualities.

关键词： MAX Q-switched giant pulsed erbium-doped all-fiber laser with V_(2)ZnC MAX phase saturable absorber

Trigonelline mitigates bleomycin-induced idiopathic pulmonary fibrosis in mice

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2024年第9期14卷 391-400,I0008-I0291页

作者： swapnil Gavhane Chandrakant Gawli sachin Kumar Biswajit Das Gayatri Marathe Vishal s.Patil harun M.Patel Basavaraj Bommanahalli Chanakya Nath Kundu Chandragouda R.Patil R.C.Patel Institute of Pharmaceutical Education and Research Karwand NakaShirpurMaharashtra 425405India Department of Pharmacology Delhi Pharmaceutical Sciences and Research UniversityNew Delhi 110017India school of Biotechnology Kalinga Institute of Industrial TechnologyBhubaneshwar 751024India Gadag Institute of Medical sciences GadagKarnataka 582103India

Objective:To evaluate the effect of trigonelline on bleomycin-induced idiopathic pulmonary fibrosis(IPF)and to explore its underlying mechanisms using network ***:IPF was induced in C57BL/6 mice by a single intratracheal instillation of bleomycin(5 mg/kg).Trigonelline was administered at doses of 25,50,and 100 mg/kg/day orally from the 2nd day post-bleomycin induction up to the 14th *** IPF-induced mice,lung coefficient,immune cell infiltration in bronchoalveolar lavage fluid,and oxidative stress were *** alterations in lung tissues were also ***,network pharmacology approach was conducted to reveal molecular interactions of bleomycin and trigonelline with targets of ***:Trigonelline treatment reduced bleomycin-induced oxidative stress and immune cell infiltration,and mitigated physiological changes in the lung tissues of ***,trigonelline alleviated bleomycin-induced histological alterations in lung *** pharmacology analysis showed that bleomycin and trigonelline interacted with IPF targets,such as NFKB1,HDAC2,HIF1A,and ***:The interaction of trigonelline with key IPF targets and its ameliorative effects on lung damage and oxidative stress highlight its potential in treating *** may be considered an antifibrotic agent for further clinical development.

关键词： Trigonelline Idiopathic pulmonary fibrosis Antifibrotic Bleomycin Network pharmacology

A Partial Double-Pass s-Band Erbium-Doped Fibre Amplifier

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 2005年第12期22卷 3080-3082页

作者： s.laiman wadi harun Nor Kamilah saat Harith Ahmad Faculty of Engineering Multimedia University Jalan Multimedia 63100 Cyberjaya Selangor Malaysia Photonics Laboratory Department of Physics University of Malaya 50603 Kuala Lumpur Malaysia

An efficient and low noise short wavelength band erbium-doped fibre amplifier （s-band EDFA） is proposed and demonstrated using double-pass configuration. This amplifier provides a gain of 1500 nm signal as high as 26.9 dB, which is 9.6 dB higher than the two-stage single-pass amplifier. The corresponding noise figure obtained is 7.5 dB, which is of the same level as in the single-pass amplifier and more than 2 dB lower than the previously reported double-pass amplifier [IEIOE Electron. Express 2 （2005） 182]. The gain enhancement is due to the double pass-propagation of the test signal in the second stage, which increases the effective erbium-doped fibre （EDF） length. The low noise is attributed to the optical circulator between EDFs, which prevents the backward amplified spontaneous emission from propagating into the input part of the amplifier. The proposed amplifier is expected to play an important role in the development of a practical s-band EDFA.

关键词： Erbium doped fiber amplifiers

Generation of Q-switched Mode-Locked Erbium-Doped Fiber Laser Operating in Dark Regime

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 2016年第3期33卷 32-35页

作者： Zian Cheak Tiu Arman Zarei Harith Ahmad s.laiman wadi harun Photonics Research Center University of Malaya Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya

We demonstrate a stable Q-switched mode-locked erbium-doped fiber laser （EDFL） operating in dark regime based on the nonlinear polarization rotation technique. The EDFL produces a pulse train where the Q-switching envelope is formed by multiple dark pulses. The repetition rate of the Q-switched envelope can be increased from 0.96kHz to 3.26kHz, whereas the pulse width reduces from 211 #s to 86#s. The highest pulse of 479nJ is obtained at the pump power of 55 mW. It is also observed that the dark pulses inside the Q-switching envelope consist of two parts： square and trailing dark pulses. The shortest pulse width of the dark square pulse is obtained at 40.5μs when the pump power is fixed at 145mW. The repetition rate of trailing dark pulses can be increased from 27.62kHz to 50kHz as the pump power increases from 55mW to 145mW.

关键词： of on is as Generation of Q-switched Mode-Locked Erbium-Doped Fiber Laser Operating in Dark Regime in

Artificial Intelligence for Maximizing Agricultural Input Use Efficiency: Exploring Nutrient, Water and Weed Management strategies

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第7期93卷 1569-1598页

作者： sumit sow shivani Ranjan Mahmoud F.seleiman Hiba M.Alkharabsheh Mukesh Kumar Navnit Kumar smruti Ranjan Padhan Dhirendra Kumar Roy Dibyajyoti Nath harun Gitari Daniel O.Wasonga Department of Agronomy Dr.Rajendra Prasad Central Agricultural UniversityPusaSamastipurBihar848125India Department of Plant Production College of Food and Agriculture SciencesKing Saud UniversityRiyadh11451Saudi Arabia Department of Crop sciences Faculty of AgricultureMenoufia UniversityShibin El-Kom32514Egypt Department of Water Resources and Environmental Management Faculty of Agricultural TechnologyAl Balqa Applied UniversitySalt19117Jordan Division of Agronomy ICAR-Indian Agricultural Research InstitutePusa CampusNew Delhi110012India Department of soil science Dr.Rajendra Prasad Central Agricultural UniversityPusaSamastipurBihar848125India Department of Agricultural science and Technology School of Agriculture and Environmental SciencesKenyatta UniversityNairobi43844Kenya Department of Crop sciences University of Illinois Urbana-ChampaignUrbanaIL 61801USA

Agriculture plays a crucial role in the economy,and there is an increasing global emphasis on automating agri-cultural *** the tremendous increase in population,the demand for food and employment has also increased signiﬁ*** methods traditionally used to meet these requirements are no longer ade-quate,requiring solutions to issues such as excessive herbicide use and the use of chemical *** of technologies such as the Internet of Things,wireless communication,machine learning,artiﬁcial intelligence(AI),and deep learning shows promise in addressing these ***,there is a lack of comprehensive documentation on the application and potential of AI in improving agricultural input efﬁ*** address this gap,a desk research approach was used by utilizing peer-reviewed electronic databases like PubMed,scopus,Goo-gle scholar,Web of science,and science Direct for relevant *** of 327 initially identiﬁed articles,180 were deemed pertinent,focusing primarily on AI’s potential in enhancing yield through better management of nutrients,water,and *** into account researchﬁndings worldwide,we found that AI technologies could assist farmers by providing recommendations on the optimal nutrients to enhance soil quality and deter-mine the best time for irrigation or herbicide *** present status of AI-driven automation in agricul-ture holds signiﬁcant promise for optimizing agricultural input utilization and reducing resource waste,particularly in the context of three pillars of crop management,i.e.,nutrient,irrigation,and weed management.

关键词： Agriculture artiﬁcial intelligence crop management nutrient irrigation weed management resource use efﬁciency

Rice-wheat comparative genomics:Gains and gaps

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2024年第3期12卷 656-669页

作者： Akila Wijerathna-Yapa Ruchi Bishnoi Buddhini Ranawaka Manu Maya Magar Hafeez Ur Rehman swati G.Bharad Michal T.Lorenc Vinita Ramtekey sasha Gohar Charu Lata Md.harun-Or-Rashid Maryam Razzaq Muhammad sajjad Bhoja *** school of Agriculture and Food sustainability The University of QueenslandSt LuciaQLD 4072Australia ARC Centre of Excellence for Plant success in Nature and Agriculture The University of QueenslandSt LuciaQLD 4072Australia Department of Genetics and Plant Breeding College of AgricultureUmmedganj-KotaAgriculture UniversityKotaRajasthan 324001India Centre for Agriculture and the Bioeconomy Queensland University of Technology(QUT)2 George StreetBrisbaneQLD 4000Australia UWA school of Agriculture and Environment The University of Western Australia35 Stirling HighwayCrawleyWA 6009Australia Nepal Agriculture Research Council KhumaltarLalitpurNepal Department of Agronomy University of AgricultureFaisalabad 38040Pakistan Department of Agricultural Botany Dr Panjabrao Deshmukh Krishi VidyapeethAkola 444104MaharashtraIndia ICAR-Indian Institute of seed science MauUttar Pradesh 275103India school of Natural sciences Macquarie UniversityMacquarie ParkNSW 2109Australia ICAR-Indian Institute of Wheat and Barley Research Flowrdale 54642ShimlaIndia International Maize and Wheat Improvement Center(CIMMYT)Bangladesh Office Gulshan-2Dhaka 1212Bangladesh Center for seed science University of AgricultureFaisalabad 38000Pakistan Department of Biosciences COMSATS University IslamabadPark RoadTarlai KalanIslamabad 45550Pakistan CGIAR’s Excellence in Breeding(EiB)Platform/Accelerated Breeding Initiative International Maize and Wheat Improvement Center(CIMMYT)El Batán 56237Mexico

Rice and wheat provide nearly 40%of human calorie and protein *** share a common ancestor and belong to the Poaceae(grass)*** their genetic homology is crucial for developing new cultivars with enhanced *** wheat genes and gene families have been characterized based on their rice ***–wheat orthology can identify genetic regions that regulate similar traits in both ***–wheat comparative genomics can identify candidate wheat genes in a genomic region identified by association or QTL mapping,deduce their putative functions and biochemical pathways,and develop molecular markers for marker-assisted breeding.A knowledge of gene homology facilitates the transfer between crops of genes or genomic regions associated with desirable traits by genetic engineering,gene editing,or wide crossing.

关键词： Comparative genomics Orthologs Genes synteny Genetic engineering Molecular breeding

Harmonic Dark Pulse Emission in Erbium-Doped Fiber Laser

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2015年第3期32卷 49-51页

作者： Zian Cheak Tiu Arman Zarei sin Jin Tan Harith Ahmad s.laiman wadi harun Department of ElectricM Engineering Faculty of Engineering University of Malaya Kuala Lumpur 50603 Malaysia Photonics Research Center University of Malaya Kuala Lumpur 50603 Malaysia school Of Engineering KDU University College Petaling Jaya 47400 Malaysia

A harmonic dark pulse generation in an erbium-doped fiber laser is demonstrated based on a figure-of-eight configuration. It is found that the harmonic dark pulse can be shifted from the fundamental to the 5th order harmonic by increasing the pump power with an appropriate polarization controller orientation. The fundamental repetition rate of 2O kHz is obtained at the pump power of 29 m W. The highest pulse energy of 42.6 n3 is obtained at the fundamental repetition rate. The operating frequency of the dark pulse trains shifts to 2nd, 3rd, 4th and 5th harmonic as the pump powers are increased to 34mW, 50mW, 59mW and 137mW, respectively.

关键词： Harmonic Dark Pulse Emission in Erbium-Doped Fiber Laser EDF DsF kHz

Q-switching Pulse Generation with Thulium-Doped Fiber saturable Absorber

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2014年第12期31卷 56-58页

作者： Zian Cheak Tiui Arman Zarei sin Jin Tan Harith Ahmad s.laiman wadi harun Department of Electrical Engineering Faculty of Engineering University of Malaya Kuala Lumpur 50603 Malaysia Photonics Research Center University of Malaya Kuala Lumpur 50603 Malaysia school of Engineering KDU University College SS22/41 Damansara Jaya PetMing Jaya 47400 Selangor Darul Ehsan Malaysia

Q-switched pulsed laser systems operating in the eye-safe wavelength region （λ〉 1.4 μm） are promis- ing for applications such as light detection and ranging （lidar）, differential absorption lidar, optical communi- cation, sensor and instrumentations. Fiber lasers are particularly attractive for such applications due to the fact that the beam quality can be independent of output power and they can be robustly engineered. There is an increasing interest in Q-switched erbium- doped fiber lasers （EDFLs）, which can be generated by using either active or passive techniques. Com- pared with the actively Q-switched ones, passively Q- switched EDFLs have attracted much attention for their advantages of compactness, low cost, flexibility and simplicity of design. Different kinds of saturable absorbers, such as the transition metal-doped crys- tals and semiconductor quantum-well structures, have been applied to realize Q-switched ***- ever, when they are used in the laser cavity, additional alignment devices, such as lens, mirrors or U-bench units, have to be applied. This may increase the in- sertion loss and the complexity of the laser cavity.

关键词： Q-switching Pulse Thulium-Doped Fiber saturable Absorber