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Ensemble machine learning models based on Reduced Error Pruning Tree for prediction of rainfall-induced landslides

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International Journal of Digital Earth 2021年第5期14卷 575-596页

作者： Binh Thai Pham Abolfazl Jaafari Trung nguyen-Thoi Tran van Phong Huu Duy nguyen neelima Satyam Md Masroor Sufia Rehman Haroon Sajjad Mehebub Sahana Hiep van Le Indra Prakash Division of Computational Mathematics and Engineering Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh CityViet Nam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityViet Nam Research Institute of Forests and Rangelands Agricultural ResearchEducationand Extension Organization(AREEO)TehranIran Institute of Geological Sciences Vietnam Academy of Sciences and TechnologyHanoiViet Nam Faculty of Geography V.N.U.University of ScienceVietnam National UniversityHanoiViet Nam Discipline of Civil Engineering Indian Institute of Technology IndoreMadhya PradheshIndia Department of Geography Jamia Millia IslamiaNew DelhiIndia School of Environment Education and DevelopmentUniversity of ManchesterManchesterUK Institute of Research and Development Duy Tan UniversityDa NangViet Nam DDG(R)Geological Survey of India GujaratIndia

In this paper,we developed highly accurate ensemble machine learning models integrating Reduced Error Pruning Tree(REPT)as a base classifier with the Bagging(B),Decorate(D),and Random Subspace(RSS)ensemble learning techniques for spatial prediction of rainfallinduced landslides in the Uttarkashi district,located in the Himalayan range,*** do so,a total of 103 historical landslide events were linked to twelve conditioning factors for generating training and validation *** Mean Square Error(RMSE)and Area Under the receiver operating characteristic Curve(AUC)were used to evaluate the training and validation performances of the *** results showed that the single REPT model and its derived ensembles provided a satisfactory accuracy for the prediction of *** D-REPT model with RMSE=0.351 and AUC=0.907 was identified as the most accurate model,followed by RSS-REPT(RMSE=0.353 and AUC=0.898),B-REPT(RMSE=0.396 and AUC=0.876),and the single REPT model(RMSE=0.398 and AUC=0.836),*** prominent ensemble models proposed and verified in this study provide engineers and modelers with insights for development of more advanced predictive models for different landslide-susceptible areas around the world.

关键词： Machine learning ensemble modeling Bagging Decorate Random Subspace

Combining SnO_(2-x)and g-C_(3)n_(4)nanosheets toward S-scheme heterojunction for high selectivity into green products of nO degradation reaction under visible light

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Journal of Materiomics 2022年第1期8卷 1-8页

作者： Pham van Viet Thanh-Dat nguyen Dai-Phat Bui Cao Minh Thi Faculty of Materials Science and Technology University of ScienceVNU-HCM227 Nguyen Van Cu StreetDistrict 5Ho Chi Minh City700000Viet Nam Vietnam national University-Ho Chi Minh City Thu Duc DistrictHo Chi Minh City700000Viet Nam Ho Chi Minh City University of Technology(HUTECH) 475A Dien Bien Phu StreetBinh Thanh DistrictHo Chi Minh City700000Viet Nam

nOx emissions cause many negative impacts on the living *** photocatalysis of semiconductors is superior for nitric oxide(nO)degradation due to their low redox *** this report,we combine SnO_(2-x)/g-C_(3)n_(4)heterojunction photocatalyst toward the high selectivity into green products under visible light *** show that SnO_(2-x)/g-C_(3)n_(4)heterojunction degraded 40.8%of nO,which is 1.6 times higher than that of g-C_(3)n_(4).In addition,the selectivity coefficient of SnO_(2-x)/g-C_(3)n_(4)is higher 3 times than both pure SnO_(2-x)and g-C_(3)n_(4).Furthermore,SnO_(2-x)/g-C_(3)n_(4)expresses a superior stability for nO photocatalytic-degradation after five *** scavenger trapping test results,and electron spin resonance(ESR)analysis also provide more understanding of the charge transfer mechanism of ***_(2-x)/g-C_(3)n_(4)heterojunction shows a high removal efficiency of nO gas,making it an up-and-coming environmental treatment candidate.

关键词： G-C_(3)n_(4) nO removal Oxygen vacancies Photocatalysis S-scheme

Recent progress in emerging BiPO_(4)-based photocatalysts:Synthesis,properties,modification strategies,and photocatalytic applications

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Journal of Materials Science & Technology 2022年第13期108卷 208-225页

作者： Rohit Kumar Pankaj Raizada Aftab Aslam Parwaz Khan van-Huy nguyen Quyet van Le Suresh Ghotekar Rangabhashiyam Selvasembian Vimal Gandhi Archana Singh Pardeep Singh School of Advanced Chemical Sciences Shoolini UniversitySolan(Himachal Pradesh)-173212India Center of Excellence for Advanced Materials Research King Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia Faculty of Biotechnology Binh Duong UniversityThu Dau MotVietnam. Department of Materials Science and Engineering Korea University145Anam-ro Seongbuk-guSeoul 02841South Korea Department of Chemistry Smt.Devkiba Mohansinhji Chauhan College of Commerce and ScienceSilvassa 396230University of MumbaiDadra and Nagar Haveli(UT)India Department of Chemistry S.N.ArtsD.J.M.Commerce and B.N.S.Science CollegeSangamner 422605Savitribai Phule Pune UniversityMaharashtraIndia Department of Biotechnology School of Chemical and BiotechnologySASTRA Deemed UniversityThanjavur-613401TamilnaduIndia Department of Chemical Engineering Faculty of TechnologyDharmsinh Desai UniversityNadiad-387001GujaratIndia Advanced Materials and Processes Research Institute Hoshangabad RoadBhopal 462026India

In this perspective,we have highlighted the current literature and explained the synthesis,structure,morphology,modification strategies,and photocatalytic applications of emerging BiPO_(4)-based *** BiPO_(4)is a large bandgap photocatalyst,it uses UV light for the excitation of electrons,and also,the recombination of charge carriers is an issue in BiPO_(4).Various novel modification strategies of BiPO_(4)photocatalysts *** modifications,heterojunction formation,phase-junctions,surface plasmon resonance,Schottky junction have been successfully proposed and *** modifications enhance the light absorption and inhibit the recombination of charge carriers BiPO_(4)***,future aspects for further research on BiPO_(4)-based photocatalysts are also *** expects that BiPO_(4)-based photocatalysts represent a promising strategy for developing practical photocatalysts for energy and environmental remediation applications.

关键词： Photocatalysis Modification strategies Environmental remediation BiPO_(4)photocatalyst

Tin electronucleation and growth from Sn(II) in nonaqueous solutions based on ethylene glycol: Electrochemical behavior and temperature effect

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Transactions of nonferrous Metals Society of China 2023年

作者： Kiem Do van nguyen van Hieu Tu Le Manh Phenikaa Research and Technology Institute (PRATI)， A&A Green Phoenix Group Faculty of Electrical and Electronic Engineering， Phenikaa University Faculty of Materials Science and Engineering， Phenikaa Institute for Advanced Study (PIAS)， Phenikaa University

Thermodynamic and kinetic aspects of tin electronucleation and growth processes onto a glassy carbon electrode from SnCl2·2H2O dissolved in ethylene glycol solutions were studied. Typical reduction and oxidation peaks observed in voltammograms have demonstrated the capability of ethylene glycol solutions to electrodeposit Sn. The temperature-dependence of diffusion coefficient values derived from potentiodynamic and potentiostatic studies helped to determine and validate estimations of the activation energy for Sn(II) bulk diffusion. Chronoamperometric results have identified that， the suitable model to describe the early stage of Sn electrodeposition could be composed of Sn three-dimensional nucleation and diffusion-controlled growth and water reduction contributions， which was duly validated by theoretical and experimental approaches. From the model， typical kinetic parameters such as nucleation frequency， A， number density of tin nuclei， n0， and D， were determined. The presence of tin nuclei with excellent quality and their structure were verified using SEM， EDX， and XRD techniques.

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A new species of the genus Leptolalax (Anura： Megophryidae) from southern Vietnam

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Zoological Research 2018年第3期39卷 185-201页

作者： Tang van Duong Dang Trong Do Chung Dac ngo Truong Quang nguyen nikolay A. Poyarkov Vietnam national Museum of nature Vietnam Academy of Science and Technology Hanoi Vietnam Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State University Moscow 119234 Russia Faculty of natural Sciences Phu Yen University Tuy Hoa Phu Yen Vietnam College of Education Hue University Hue Vietnam Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Hanoi Vietnam Graduate University of Science and Technology Vietnam Academy of Science and Technology Cau Giay Hanoi Vietnam Joint Russian- Vietnamese Tropical Research and Technological Center Nghia Do Cau Giay Hanoi Vietnam

We describe a new species of megophryid frog from Phu Yen Province in southern Vietnam. Leptolalax macrops sp. nov. is distinguished from its congeners by a combination of the following morphological attributes：（1） body size medium （SVL 28.0-29.3 mm in three adult males, 30.3 mm in single adult female）; （2） supra-axillary glands present, creamy white; ventrolateral glands indistinct; （3） tympanum externally distinct; （4） dorsal skin roughly granular with larger tubercles, dermal ridges on dorsum absent; （5） rudimentary webbing present between fingers I-II and I1-111; rudimentary webbing between all toes; fingers and toes without dermal fringes; （6） in life ventral surface greyish-violet with white speckling; （7） supratympanic fold distinct, dark brown in life; （8） iris bicolored, typically golden in upper half, fading to golden green in lower half; （9） tibia short （TbL/SVL 0.44-0.45 in males）; and （10） eyes large and protuberant （ED/SVL 0.15-0.16 in males） From all congeners for which comparable sequences are available, the new species differs markedly in the 16S rRnA mitochondrial gene sequence （P-distance〉5.7%）. The new species is currently known only from montane evergreen tropical forests of Song Hinh District, Phu Yen Province, and M＇Drak District of Dak Lak Province at elevations of 470-630 m a.s.l.. We suggest the new species should be considered as Data Deficient following the IUCn＇s Red List categories. We also report a previously unknownLeptolalax mtDnA lineage from an evergreen tropica forest in the Hoa Thinh District of Phu Yen Province which may also represent an undescribed species.

关键词： Leptolalax macrops sp. nov. Phu YenProvince Dak Lak Province Southern coastal regionof Vietnam

Safety and biodegradability of a synthetic dural sealant patch(Liqoseal)in a porcine cranial model

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Animal Models and Experimental Medicine 2021年第4期4卷 398-405页

作者： Ahmet Kinaci Wilhelmina Bergmann Sander van Thoor Saskia Redegeld albert van der Zwan Tristan P.C.van Doormaal Department of neurology and neurosurgery Brain CenterUniversity Medical Centre UtrechtUtrechtThe Netherlands Brain Technology Institute UtrechtThe Netherlands Division of Pathology Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands Department of neurosurgery Clinical Neuroscience CenterUniversity Hospital ZurichZurichSwitzerland

Background:Liqoseal consists of a watertight layer of poly(ester)ether urethane and an adhesive layer containing polyethylene glycol-n-hydroxysuccinimide(PEG-nHS).It is designed to prevent cerebrospinal fluid(CSF)leakage after intradural *** study assessed the safety and biodegradability of Liqoseal in a porcine craniotomy ***:In 32 pigs a craniotomy plus durotomy was *** 15 pigs Liqoseal was implanted,in 11 control pigs no sealant was implanted and in 6 control pigs a control dural sealant(Duraseal or Tachosil)was *** safety of Liqoseal was evaluated by clinical,MRI and histological *** degradation of Liqoseal was histologically ***:Liqoseal,2 mm thick before application,did not swell and significantly was at maximum mean thickness of 2.14(±0.37)mm at one *** foreign body reaction induced by Liqoseal,Duraseal and Tachosil were *** showed no adherence to the arachnoid layer and was completely resorbed between 6 and 12 months *** one animal with Liqoseal,an epidural fluid collection containing CSF could not be ***:Liqoseal seems to be safe for intracranial use and is *** safety and performance in humans needs to be further assessed in clinical trials.

关键词： cerebrospinal fluid leakage craniotomy dura in vivo model sealant

An analytical model for cross-Kerr nonlinearity in a four-level n-type atomic system with Doppler broadening

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Chinese Physics B 2022年第2期31卷 314-319页

作者： Dinh Xuan Khoa nguyen Huy Bang nguyen Le Thuy An nguyen van Phu Le van Doai Vinh University 182 Le Duan StreetVinh CityVietna

We present an analytical model for cross-Kerr nonlinear coefficient in a four-level n-type atomic medium under Doppler *** model is applied to87 Rb atoms to analyze the dependence of the cross-Kerr nonlinear coefficient on the external light field and the temperature of atomic *** analysis shows that in the absence of electromagnetically induced transparency(EIT)the cross-Kerr nonlinear coefficient is zero,but it is significantly enhanced when the EIT is *** means that the cross-Kerr effect can be turned on/off when the external light field is on or ***,the amplitude and the sign of the cross-Kerr nonlinear coefficient are easily changed according to the intensity and frequency of the external light *** amplitude of the cross-Kerr nonlinear coefficient remarkably decreases when the temperature of atomic medium *** analytical model can be convenient to fit experimental observations and applied to photonic devices.

关键词： electromagnetically induced transparency Kerr nonlinear effect Doppler effect

A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand

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Zoological Research 2020年第5期41卷 581-588页

作者： Chatmongkon Suwannapoom Tan van nguyen Parinya Pawangkhanant Vladislav A.Gorin Siriwadee Chomdej Jing Che nikolay A.Poyarkov Division of Fishery School of Agriculture and Natural ResourcesUniversity of PhayaoPhayao 56000Thailand Department of Species Conservation Save Vietnam's Wildlife CenterNinh BinhVietnam Faculty of Biology Department of Vertebrate ZoologyMoscow State UniversityMoscow 119234Russia Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Research Center in Bioresources for Agriculture Industry and MedicineChiang Mai UniversityChiang Mai 50200Thailand State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezin Nay Pyi Taw 05282Myanmar Laboratory of Tropical Ecology Joint Russian-Vietnamese Tropical Research and Technological CenterHanoiVietnam

DEAR EDITOR,We report on a new species,Micryletta dissimulans ***.,from the lowland forests of southern Thailand,which is described based on molecular and morphological *** new species is characterized by a combinatio... 详细信息

关键词： sp.nov. Amphibia new

Acute phase reactants, challenge in the near future of animal production and veterinary medicine

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第10期6卷 941-947页

作者： GRUYS E. ,TOUSSAInT M.J.M. ,UPRAGARIn n. ,van EDEREn A.M. ,ADEWUYI A.A. ,CAnDIAnI D. ,nguyen T.K.A. ,SABECKIEnE (BALCIUTE) J. Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Pathobiology Faculty of Veterinary Medicine Utrecht University Utrecht the netherlands Department of Farm Resources and Production Medicine Faculty of Veterinary Medicine Kasetsart University nakhon Pathom Thailand Department of Veterinary Morphophysiology University of Torino Italy Department of Embryo Transfer and Reproduction the national Institute of Animal Husbandry Hanoi Vietnam Department of Infectious Diseases Lithuanian Veterinary Academy Kaunas Lithuania)

The future of acute phase proteins (APPs) in science is discussed in this paper. Many functions and associated pathological processes of APPs are unknown. Extrahepatic formation in local tissues needs attention. Local serum amyloid A (SAA) formation may be involved in deposition of AA-amyloid induced by conformational change of SAA resulting in amyloid formation, having tremendous food safety implications. Amyloidogenesis is enhanced in mouse fed beta pleated sheet-rich pro- teins. The local amyloid in joints of chicken and mammary corpora amylacea is discussed. Differences in glycosylation of glycoproteins among the APPs, as has been shown for α1-acid glycoprotein, have to be considered. More knowledge on the reactivity patterns may lead to implication of APPs in the diagnostics and staging of a disease. Calculation of an index from values of several acute phase variables increases the power of APPs in monitoring unhealthy individuals in animal populations. Vaccinations, just as infections in eliciting acute phase response seem to limit the profitability of vaccines because acute phase reactions are contraproductive in view of muscle anabolism. Interest is focused on amino acid patterns and vitamins in view of dietary nutrition effect on sick and convalescing animals. When inexpensive methodology such as liquid phase methods (nephelometry, turbidimetry) or protein array technology for rapid APPs measurement is available, APPs have a future in routine diagnostics. Specific groups of patients may be screened or populations monitored by using APPs.

关键词： Acute phase protein Amino acid Joint Mammary gland Mastitis Serum amyloid A (SAA) Vitamin A