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The impact of green finance,eco-innovation,renewable energy and carbon taxes on CO_(2) emissions in BRICS countries:Evidence from CS ARDL estimation

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Geoscience Frontiers 2024年第4期15卷 449-458页

作者： Muhammad Sadiq Ka Yin Chau Nguyen Tran Thai ha Thi thu Hien phan Thanh Quang Ngo Pham Quang Huy Carbon Economy Research Center Fuzhou University of International Studies and TradeFuzhou 350202China School of Accounting and Finance Faculty of Business and LawTaylor’s UniversityMalaysia Faculty of Business City University of MacaoTaipaMacaoChina Faculty of Finance and Banking Van Lang UniversityHo Chi Minh CityVietnam Zhejiang Shuren University No.8 Shuren streetHangzhou 310015China School of Government University of Economics Ho Chi Minh City(UEH)Ho Chi Minh City 72407Viet Nam Research Group Public Governance and Developmental Issues University of Economics Ho Chi Minh City(UEH)Ho Chi Minh City 72407Viet Nam Ho Chi Minh City University of Economics and Finance(UEF) Ho Chi Minh CityVietnam University of Economics and Human Sciences in Warsaw WarsawPoland

A sharp increase in economic and human development has multiplied the carbon intensity due to which there is a significant need of effective strategies in order to curb carbon ***,the present study aims to examine the effective of green finance,eco-innovation,renewable energy output(REO),renewable energy consumption(REC),and carbon taxes on carbon dioxide(CO_(2))emissions in BRICS countries in the time of ***-sectional autoregressive distributed lag(CS ARDL)is used to test the connection among the *** estimations of CS-ARDL approach validates the effectiveness of green finance,eco-innovation,REO,REC,carbon taxes,and industrialization as the relationship of these factors with carbon emissions is negative in nature in BRICS *** on the evidences,the study recommends the formulation of environmentally friendly practices and advancement in green finances to mitigate carbon emissions.

关键词： Green finance Eco-innovation Renewable energyoutput Carbon taxes Environmental degradation CO_(2)emissions

Twin reversed arterial perfusion sequence-a rare and dangerous complication form of monochorionic twins:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10214-10219页

作者： Nguyen Duy Anh Nguyen-Thi thu ha Nguyen-Thi Sim Nguyen Khac Toan phan-Thi Huyen thuong Nguyen Minh Duc Fetal Medicine Center Hanoi Obstetrics and Gynecology HospitalHanoi 100000Vietnam Department of Assisted Reproduction Hanoi Obstetrics and Gynecology HospitalHanoi 100000Vietnam Department of Obstetrics and Gynecology Hanoi University of Medicine and PharmacyHanoi 100000Vietnam Department of Radiology Pham Ngoc Thach University of MedicineHo Chi Minh City 700000Vietnam

BACKGROUND Twin reversed arterial perfusion(TRAP) sequence is an extremely rare congenital anomaly in monochorionic(MC) *** condition is characterized by a malformed fetus(acardiac twin) without cardiac activities being perfused by a structurally normal one(pump twin) via an artery-to-artery anastomosis in a reverse *** SUMMARY We described the first case of TRAP to receive laser surgery in *** 26-wk pregnancy was originally misdiagnosed in another hospital as MC twins with single intrauterine fetal *** admission to our center,the diagnosis was amended to a 26-wk TRAP sequence stage *** acardiac twin was 7.5 cm at the longest length,the ratio of the weight of the acardiac twin to the weight of the pump twin was more than 90%,the pump twin showed fetal distress with absent diastolic flow in umbilical artery of pump twin,and the peak systolic velocity in the middle cerebral artery = 1.6 Mo *** performed emergency laser photocoagulation of the acardiac twin’s umbilical *** surgery,we successfully maintained the pregnancy for 8 wk and ended it electively by cesarean section at 34 wk of gestation due to rupture of *** TRAP should be appropriately diagnosed and treated early to avoid complications of the pump *** laser photocoagulation is a new and effective treatment for this condition.

关键词： Twin reversed arterial perfusion Acardiac twin Pump twin Laser Case report

Study on Extraction and Conversion Annatto （Bixa orellana L.） Color into Norbixin to Prepare Food Grade Water-Soluble Norbixin Powder

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Journal of Life Sciences 2017年第2期11卷 97-104页

作者： Tran Thi ha Dao phan Thoai Le Thi thu thuy phan The Dong The Department of Food- Environment & Nursing Dong Nai Technology University Dong Nai 810000 Viet Nam The Faculty of Science & Engineering Hoa Sen University Ho Chi Minh 700000 Viet Nam

Response surface methodology was used in this research to optimize the technical parameters of the extraction and conversion color compound in armatto seeds into norbixin. Parameters affected the extraction efficiency and norbixin recovery yield were solvent concentration, rate of solvent/seed, incubation time, and incubation temperature. The optimization results including： concentration of ethanol is 51.82°; concentration of NaOH is 0.52 M; ratio of solvent/seed is 7.1/1; incubation time is 33.12 minutes, incubation temperature is 58.6℃, and the rate of 36% HCl/color solution is 0.5/5 （v/v）.

关键词： Achiote Bixa orellana L. bixin norbixin extraction conversion food color.

Structural Characteristics of Allomyrina Dichotoma Beetle＇s Hind Wings for Flapping Wing Micro Air Vehicle

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Journal of Bionic Engineering 2014年第2期11卷 226-235页

作者： Ngoc San ha Quang Tri Truong Hoang Vu phan Nam Seo Goo Hoon Cheol Park Biomimetics and Intelligent Microsystem Laboratory Department of Advanced Technology Fusion Division of Interdisciplinary Studies Konkuk University Seoul 143-701 Republic of Korea

In this study, we present a complete structural analysis ofAllomyrina dichotoma beetle＇s hind wings by investigating their static and dynamic characteristics. The wing was subjected to the static loading to determine its overall flexural stiffness. Dy- namic characteristics such as natural frequency, mode shape, and damping ratio of vibration modes in the operating frequency range were determined using a Bruel ＆ Kjaer fast Fourier transform analyzer along with a laser sensor. The static and dynamic characteristics of natural Allomyrina dichotoma beetle＇s hind wings were compared to those of a fabricated artificial wing. The results indicate that natural frequencies of the natural wing were significantly correlated to the wing surface area density that was defined as the wing mass divided by the hind wing surface area. Moreover, the bending behaviors of the natural wing and artificial wing were similar to that of a cantilever beam. Furthermore, the flexural stiffness of the artificial wing was a little higher than that of the natural one whereas the natural frequency of the natural wing was close to that of the artificial wing. These results provide important information for the biomimetic design of insect-scale artificial wings, with which highly ma- neuverable and efficient micro air vehicles can be designed.

关键词： beetle hind wing flexural stiffness natural frequency mode shape Micro Air Vehicles (MAVs)

Does environmental policy stringency alter the natural resourcesemissions nexus?Evidence from G-7 countries

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Geoscience Frontiers 2024年第5期15卷 454-466页

作者： Roni Bhowmik Arshian Sharif Ahsan Anwar Qasim Raza Syed phan The Cong Ngo Ngan ha School of Business Guangdong University of Foreign StudiesGuangdongPeople’s Republic of China Faculty of Business&Entrepreneurship Daffodil International UniversityDhakaBangladesh Lancashire School of Buiness and Enterprise University of Central LancashirePrestonUnited Kingdom Department of Economics and Finance Sunway Business SchoolSunway UniversitySubang JayaMalaysia Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon University of Economics and Human Sciences in Warsaw WarsawPoland College of International Studies Korea UniversitySeoulSouth Korea Centre for Business Informatics and Industrial Management(CBIIM) UCSI Graduate Business SchoolUCSI UniversityKuala LumpurMalaysia European University of Lefke LefkeNorthern CyprusTR-10 MersinTurkiye Universiti Sains Malaysia Malaysia Department of Business Administration ILMA UniversityKarachiPakistan Faculty of Economics Thuongmai UniversityHanoiViet Nam

Natural resource management is indispensable keeping in view their positive economic impacts as well as their detrimental environmental *** achieve certain SDGs,it is inevitable to manage natural resources through effective policies that help to inhibit adverse environmental *** on this approach,the current empirical analysis aims to probe whether environmental policy stringency intensifies,meagres,and/or halts the abysmal environmental impact of natural resources in G-7 countries(United Kingdom,United States,Canada,Italy,France,Japan,and Germany)for the period from 1990 to *** that end,we rely on the second-generation panel data approaches and panel quantile *** outcomes reveal that natural resources increase carbon dioxide emission whereas the synergy of natural resources and environmental policy stringency plunges emissions across the *** findings suggest adoption of a strict environmental policy for attaining the targets of SGD-08(economic growth),SDG-09(innovations),SDG-11(sustainable cities),SDG-12(responsible consumption of natural resources),and SDG-13(climate action).

关键词： Environmental policy stringency Natural resources CO_(2)emissions G-7 countries

Suzuki Reaction of Aryl Bromides Using a Phosphine-Free Magnetic Nanoparticle-Supported Palladium Catalyst

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催化学报 2011年第11期32卷 1667-1676页

作者： Nghia T. BUI Trung B. DANG ha V. LE Nam T. S. phan Department of Chemical Engineering HCMC University of Technology VNU-HCM 268 Ly Thuong Kiet Distriet 10 Ho Chi Minh City Viet Nam

A palladium catalyst immobilized on superparaganetic nanoparticles was prepared with a palladium loading of 0.30 mmol/g. The catalyst was characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, thermogravimetric analysis, Fourier transform infrared, atomic absorption spectrophotometry, and nitrogen adsorption. The immobilized palladium catalyst was an efficient catalyst without added phosphine ligands for the Suzuki cross-coupling reaction of several aryl bromides with phenylboronic acid. The recovery of catalyst was simply by magnetic decantation in the presence of a magnet. The immobilized palladium catalyst can be reused many times without significant degradation in catalytic activity. No leaching of active palladium species into the reaction solution was detected.

关键词： superparamagnetic nanoparticle Suzuki reaction palladium aryl bromide

Acceptance to Use Daily Oral Pre-Exposure Prophylaxis (PrEP) as an HIV Prevention Method and Ability to Pay for PrEP among Men Who have Sex with Men in Ho Chi Minh City, Vietnam

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Health 2017年第9期9卷 1326-1336页

作者： Huong Thi thu phan Nga Thi thu Vu Vietnam Administration of HIV/AIDS Prevention and Control Ministry of Health Hanoi Vietnam Institute of Preventive Medicine and Public Health Hanoi Medical University Hanoi Vietnam

Background: Men who have sex with men (MSM) are disproportionately affected by HIV in Vietnam. Regardless of international and national agencies’ efforts, the HIV epidemic in MSM has been increasing in recent years. Novel and evidence-based HIV antiretroviral pre-exposure prophylaxis (PrEP) maybe needed to combat the HIV epidemic among this population in Vietnam. This study aims to identify how MSM accept the use of PrEP as an HIV prevention method and their ability to pay for it. Method: This is a cross-sectional study of 373 MSM seeking HIV testing in a community-based HIV clinic in Ho Chi Minh City, Vietnam from January to April 2016. Potential participants were briefly informed about ethical considerations, screened for eligibility, and signed an informed consent form when selected. Face-to-face interviews were conducted by the clinic’s staff. Descriptive and analytical analysis was performed by STATA 13.0. Results: Of 373 participants, only 92 men (24.7%) reported having known about PrEP. Out of 360 men who were questioned about their acceptance of PrEP as an HIV prevention method, 274 (76.1%) embraced the use of PrEP. The median maximum affordable monthly PrEP cost was one million Vietnam Dong (VND) (equivalent to US$43) and the median average affordable monthly PrEP cost was 0.5 million VND (approximately $21.7). The majority of men (68.8%) could afford an average of less than $43 a month for PrEP. Conclusion: There is a relatively high level of PrEP acceptance among MSM in Ho Chi Minh City, Vietnam. To increase PrEP acceptance, raising awareness and understanding of PrEP is recommended. To expand PrEP interventions in Vietnam, the target population’s ability to pay should be a key focus.

关键词： Pre-Exposure Prophylaxis Men Who have Sex with Men Vietnam Acceptability to Use PrEP Ability to Pay

Electrochemical Immunosensor for Detection of Atrazine Based on Polyaniline/Graphene

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Journal of Materials Science & Technology 2016年第6期32卷 539-544页

作者： Nguyen Van Chu Nguyen hai Binh Cao Thi Thanh Nguyen Van Tu Nguyen Le Huy Nguyen Tuan Dzung phan Ngoc Minh Vu Thi thu Tran Dai Lam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay.HanoiViet Nam School of Chemical Engineering.hanoi University of Science and Technology 1 Dai Co VietHanoiViet Ham Institute for Tropical Technology.Vietnam Academy of Science and Technology 18 Hoang Quoc VietHanoiViet Nam Center for High Technology Development Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoiViet Nam University of Science and Technology of hanoi.18 Hoang Quoc Viet HanoiViet Ham Graduate University of Science and Technology.Vietnam Academy of Science and Technology 18 Hoang Quoc Viet.HanoiViet Nam

In this study, a novel layer-by-layer polyaniline/graphene （PANi/Gr） structure for electrochemical detec- tion of atrazine was developed. Gr film was synthesized by thermal chemical vapor deposition （CVD） method and transferred onto the PANi-predeposited microelectrode. The properties of PANi/Gr film were thoroughly investigated by high-resolution transmission electron microscopy and Raman techniques. The most attractive feature of this system is a suitable microenvironment, which could provide an amplifi- cation of the conductive signal, thus may contribute to enhancing electron transfer and subsequently improve the sensitivity in electrochemical measurements. With low detection limit （- 43 × 10 -12 g/L）, ac-ceptable stability and good reproducibility, the proposed electrochemical immunosensor could be advantageously extended for multiplexed detection of other agents of environmental pollution.

关键词： Electrochemical immunosensor Polyaniline Graphene Atrazine

Some Characteristics of Treatment of Wastewater from Paper Production and Recycling Containing Lignin in Vietnam

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Journal of Environmental Science and Engineering(B) 2020年第4期9卷 133-138页

作者： Bui Thi thu ha Faculty of Environment HoChiMinh City University of Natural Resources and EnvironmentHo Chi Minh CityVietnam

Lignin is a difficult-to-treat pollutant in wastewater from paper production and paper *** lignin and lignin derivatives are useful materials in many different *** paper summarizes some characteristics of the lignin recovery process,lignin application and lignin *** the paper also presents some characteristics in paper wastewater treatment,paper recycling wastewater in Vietnam.

关键词： Lignin recovery coagulant chemical biological treatment wastewater treatment