85 research outputs found

    Ilmastonmuutokseen sopeutuminen Kaakkois-Aasiassa : – systemaattinen kartoitus Aasian kehityspankin projekteista vuosina 2016-2020

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    Kiinnostus ilmastonmuutokseen sopeutumista kohtaan on lisääntynyt viime vuosina sekä tutkimus- että politiikkakontekstissa ilmastonmuutoksen vaikutusten tullessa yhä selvemmiksi. Vaikka Kaakkois-Aasian haavoittuvuus ilmastonmuutoksen vaikutuksille on yksi maailman korkeimpia, kokonaisvaltaista seurantaa siitä, miten alueen maat ja yhteisöt sopeutuvat ilmastonmuutokseen ei ole vielä tehty. Käytän tutkielmassani sopeutumistutkimukselle kehitettyä systemaattista katsausmenetelmää kartoittamaan Aasian kehityspankin Kaakkois-Aasian projekteista vuosina 2016-2020 löytyneitä ilmastonmuutokseen sopeutumistoimia. Tuloksistani käy ilmi, että lähes viidesosa Aasian kehityspankin Kaakkois-Aasian sopeutumisprojekteista toimeenpannaan Kambodžhassa. Vähiten projekteja löytyi Thaimaasta ja Timor- Lestestä. Yleisesti ottaen tarkastelemani projektit olivat varsin linjassa globaalien sopeutumistrendien kanssa. Tulvat, kuivuus, myrskyt ja muut rankat sadeilmiöt olivat ilmastouhat, joihin vastattiin useimmiten sekä tarkastelemissani projekteissa että YK:n ilmastonsuojelun puitesopimuksen rahastojen projekteissa ja akateemisista julkaisuista identifioiduissa sopeutumistoimissa. Myös sektorit ja toimijat, joihin sopeutumistoimet liittyivät, olivat monenkeskisille rahoitusinstituutioille tyypillisiä, keskittyen maatalous- ja vesisektoreihin sekä kansallisiin ja paikallisiin hallintoihin ja maanviljelijöihin. Valmiuksien kehittäminen oli kaikista yleisin sopeutumistoimi, mikä viittaisi siihen, että Aasian kehityspankin toimeenpanemat sopeutumistoimet ovat yhä varsin alkuvaiheessa useimmissa Kaakkois-Aasian maissa. Näiden Kaakkois- Aasian ilmastonmuutokseen sopeutumiseen liittyvien tulosten lisäksi tutkielmani osoittaa myös, että systemaattinen katsaus soveltuu metodina monenkeskisten kehityspankkien toimeenpanemien ilmastonmuutokseen sopeutumistoimien seurantaan. Edellytyksenä tälle on kuitenkin riittävän informaation saatavuus relevanteista projekteista.As the effects of climate change have become increasingly more visible in recent years, interest in climate adaptation has grown in both research and policy contexts. However, although Southeast Asia is one of the regions most vulnerable to climate change impacts, there has not yet been an effort to comprehensively track how Southeast Asian countries and communities are adapting to climate change. I apply a systematic review methodology developed for adaptation research to map adaptation responses identified in the Asian Development Bank’s (ADB) projects in Southeast Asia in 2016-2020. My results show that close to a fifth of the ADB’s adaptation projects in Southeast Asia is implemented in Cambodia, while Thailand and Timor-Leste are the least covered countries. In general, the characteristics of my examined projects are relatively similar to global adaptation trends. Flooding, drought, storms, and other heavy rainfall events are the most frequently addressed climate hazards by both the projects I examined as well as by UNFCCC climate fund projects and by adaptation responses documented in scientific papers. The sectors addressed and actors targeted by ADB projects were also typical to multilateral funding institutions, focusing on the agricultural and water sectors as well as national and local governments and farmers. Capacity building was the most frequent adaptation response category, indicating that adaptation implementation as delivered by the ADB is still in a relatively early phase in most Southeast Asian countries. In addition to results related to climate adaptation in Southeast Asia, I also demonstrate the applicability of a systematic review methodology for tracking climate change adaptation responses implemented by multilateral development banks, given sufficient information is made available on relevant projects

    Role of digital supply chain in promoting sustainable supply chain performance: the mediating of supply chain integration and information sharing

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    AbstractPurposeThe study investigated the relationship between digital supply chain (DSC) and sustainable supply chain performance (SSCP) of small and medium-sized enterprises (SMEs) via the lens of supply chain integration (SCI) and information sharing (IS). This study concentrates more on the mediating role of SCI and IS in the link between DSC and SSCP that no research has mentioned before.Design/methodology/approachThis research figures out how the DSC impacts the performance of the organization and the supply chain. By employing a carefully designed questionnaire to gather data, a quantitative methodology was employed. Managers at the senior and medium levels were the responders who were targeted. There are 467 valid replies gathered from the primary survey. The data results were used in the analysis using partial least squares structural equation modeling (PLS-SEM).FindingsThe findings imply that SCI’s function in the information-sharing process is crucial as it fosters cooperation, coordination and connectivity throughout the DSC. Furthermore, the study’s conclusions offer helpful information on how businesses might enhance supply chain performance through information exchange. Businesses are constantly concentrating on the role that the DSC plays as a catalyst for sustainable growth and are improving supply chain performance through SCI and information exchange.Originality/valueThis study highlights the gaps and unexplored themes in the existing literature, catalogs the DSC published in the main logistics journals and helps people recognize and appreciate this kind of work. It also has the potential to contribute to future research on SSCP. Moreover, the novelty research is further reinforced by the coverage of the newfound mechanism, where SCI and IS mediate the relationship between DSC and SSCP, directly and positively enhancing SSCP

    Species diversity of rotifers (Rotifera: Eurotatoria) of Phu Ninh Lake with five new records from Vietnam

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    A total of sixty-one taxa of rotifer, belonging to 15 families, 3 orders were identified from the Phu Ninh Lake, Vietnam. Of these, five species were recorded new to Vietnam Rotifera fauna, including Lecane acanthinula (Hauer, 1938), L. sola (Hauer, 1936), L. thailandensis Segers & Sanoamuang, 1994, L. pyriformis (Daday, 1905), and Mytilina bisulcata (Lucks, 1912). The result raised the total number of rotifers known from Vietnam to 227 species. Moreover, the results showed that the number of species recorded increased with the increase of sample size, which followed the equation y=12.85+14.12log(x) (R2 = 0.99). Based on the estimators, the α-diversity of rotifers in Phu Ninh Lake might be up to 67±4 taxa (according to the Bootstrap index), 71±8 taxa (according to the Chao index), or even up to 79 taxa (according to Jacknife 2 index)

    Reduced Need of Infiltration Anesthesia Accompanied With Other Positive Outcomes in Diode Laser Application for Frenectomy in Children

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    Introduction: The abnormal maxillary labial frenum is common in children during the primary or mixed dentition stage. A conventional surgery for this abnormality usually requires infiltration anesthesia which leads to fear in children and consequent noncooperation during the surgery. The aim of present study was to evaluate the reduction in the need of infiltration anesthesia, intraoperative bleeding control and postoperative pain and wound healing in children when using the diode laser for abnormal labial frenum in the maxilla.Methods: The present study was carried out among 30 children attending the Hanoi Medical University, Vietnam. A Diode Laser with 810 nm wavelength and power of 0.8 W was used for frenectomy.Results: The proportion of procedures without any need of infiltration anesthesia was 70%, while 93.34% of children demonstrated positive and very positive behavior. Proportion of indolence on the first day after surgery was 83.3%. While 83.3% of children did not take any analgesics, not a single child complained of any pain 3 days after surgery.Conclusion: Our results indicated that the use of diode laser showed several benefits in maxillary labial frenectomy in children. These included reducing the need of infiltration anesthesia, increasing the children’s cooperation as well as decreasing the postoperative pain

    Giant compound odontoma of the mandible in an adolescent

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    Abstract Odontomas are one type of benign odontogenic hamartoma that includes the compound and complex odontoma. They are generally reported not to exceed 3 cm in diameter. Odontomas with a diameter exceeding 3 cm are considered giant odontomas. An accurate diagnosis of odontomas cannot be made during the clinical examination. The majority of compound odontoma is diagnosed most commonly during radiographic screening. It should be done in coordination with a histological examination after surgical treatment. We report a case of giant compound odontoma of the mandible in a young boy. The tumor is treated by surgical excision under general anesthesia

    HMU fluorinze mouthwash enhances enamel remineralization: An in vitro study

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    BACKGROUND: Fluoride therapy has long been used extensively to prevent dental caries. Fluoride appears in variety of dental care products such as mouthrinse, dentifrice, gel, etc. HMU fluorinze is the first mouthwash containing fluoride in Vietnam. AIM: This research was conducted to evaluate the efficacy of HMU Fluorinze mouthwash on remineralizing enamel in laboratory conditions. METHODS: 20 third molars teeth were cleaned and covered with nail polish , except for a 3x3 mm square on their buccal surfaces. These teeth went through two steps: demineralization using Coke and remineralization for 20 days: 1) using standard calcifying solution (control group) and 2) using standard calcifying solution + HMU Fluorinze mouthwash 2 times/day (experimental group). The mineralization index of enamel structure after demineralization and remineralization was assessed by DIAGNOdent pen 2190. RESULTS: The mineralization indexes of the control group and experimental group at baseline were 3.65 ± 0.76 and 3.35 ± 0.64, after demineralization were in turn of 21.78 ± 4.48 and 20.25 ± 2.26; and after remineralization were 6.30 ± 1.03 and 3.90 ± 1.24. The different figures  between the two groups after remineralization shows statistical significance (p<0.01). Group B using HMU fluorinze mouthwash after 20 days did not differ from the original results (p = 0.272), in contrast with the control group (p<0.01). CONCLUSIONS: HMU fluorinze mouthwash has better mineralization effect than standard calcifying solution

    ẢNH HƯỞNG CỦA MỘT SỐ YẾU TỐ ĐẾN QUÁ TRÌNH CHẾ TẠO NANO BẠC SỬ DỤNG DỊCH CHIẾT LÁ VỐI LÀM TÁC NHÂN KHỬ

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    In this study, we use the aqueous extract of Robusta plant leaves as a reducing agent and alginate as a surfactant to synthesize silver nanoparticles from silver nitrate (AgNO3). The influence of extraction time and the solid-liquid ratio, the concentration of AgNO3, the volume ratio between silver nitrate solution and the extract of Robusta leaves, and the reaction time on the synthesis were investigated. The optimal conditions are as follows: 15 g of leaves/200 mL, silver nitrate concentration 4 mM, Vextract/VAgNO3 4:100, 1% sodium alginate solution, and reaction time 45 minutes. The obtained solution of silver nanoparticles has a yellow-brown color. The TEM, XRD, and FT-IR measurements of the samples show that the silver nanoparticles have been successfully synthesized. The particles are spherical with an even size and 19.0-26.6 nm in diameter.Trong nghiên cứu này, chúng tôi trình bày phương pháp điều chế dung dịch nano bạc (Ag) từ bạc nitrate (AgNO3) sử dụng dịch chiết lá vối làm tác nhân khử và alginate là chất hoạt động bề mặt. Chúng tôi khảo sát ảnh hưởng của nồng độ AgNO3, tỷ lệ thể tích giữa AgNO3 và dịch chiết lá vối và thời gian phản ứng đến quá trình tạo nano Ag. Điều kiện tối ưu để tổng hợp nano Ag sử dụng dịch chiết lá vối gồm nồng độ AgNO3 4 mM, tỷ lệ thể tích Vdịch chiết /VAgNO3 = 4:100, nồng độ alginate 1%, thời gian phản ứng 45 phút tại nhiệt độ phòng. Dung dịch nano Ag thu được có màu vàng nâu đồng nhất. Kết quả đo TEM, SEM, XRD và FT-IR của các mẫu cho thấy nano Ag đã được tổng hợp thành công; hạt nano có dạng hình cầu, cấu trúc đồng đều với kích thước hạt khoảng 19,0–26,6 nm

    Network Coding with Multimedia Transmission and Cognitive Networking: An Implementation based on Software-Defined Radio

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    Network coding (NC) is considered a breakthrough to improve throughput, robustness, and security of wireless networks. Although the theoretical aspects of NC have been extensively investigated, there have been only few experiments with pure NC schematics. This paper presents an implementation of NC under a two-way relay model and extends it to two\ua0non-straightforward scenarios: (i) multimedia transmission with layered coding and multiple-description coding, and (ii) cognitive radio with Vandermonde frequency division multiplexing (VFDM). The implementation is in real time and based on software-defined radio (SDR). The experimental results show that, by combining NC and source coding, we can control the quality of the received multimedia content in an on-demand manner. Whereas in the VFDM-based cognitive radio, the quality of the received content in the primary receiver is low (due to imperfect channel estimation) yet retrievable. Our implementation results serve as a proof for the practicability of network coding in relevant applications

    Efficacy of a high potency O1 Manisa monovalent vaccine against heterologous challenge with a FMDV O Mya98 lineage virus in pigs 4 and 7 days post vaccination

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    Early protection with a high potency (>6PD50) foot-and-mouth disease (FMD) O1 Manisa (Middle-EastSouth Asia lineage) vaccine against challenge with O/VIT/2010 (O Mya98 lineage) was tested in pigs. Only two pigs that were vaccinated seven days prior to challenge had any demonstrable antibodies as a result of vaccination at the time of challenge. However, 80% and 60% of pigs that were vaccinated seven and four days prior to coronary band challenge were protected. Vaccination significantly reduced the amount of virus excreted in nasal swabs, saliva and faeces compared to unvaccinated and infected controls. Virus and viral RNA could be detected in some pigs until termination of the experiment 14 days after challenge.Antibodies to the non-structural proteins (NSP) were detected in only one pig that was challenged four days post vaccination (dpv) and transiently in two pigs that were challenged seven dpv at only one timepoint. For each vaccine and control group, a group of unvaccinated pigs were kept in the same room but with no direct contact with the infected pigs to determine whether vaccination prevented transmission. Despite the presence of live virus and viral RNA in these indirect contact pigs, the groups in contact with the vaccinated and infected pigs did not develop clinical signs nor did they sero-convert. Contact pigs in the same room as unvaccinated challenged controls did show signs of disease and virus infection that resulted in sero-conversion to the NSP. A breach of the wall that separated the two groups at nine days post challenge might have contributed to this finding. This study showed that high potency vaccine can provide protection to pigs soon after vaccination and that aerosol transmission within rooms is a rare event.Funding was provided in part by the livestock industries in Australia through Animal Health Australia. The AHA funds are matched through the Meat and Livestock Australia Donor Company by the Australian Government under MLA Project P.PSH 0652.http://www.elsevier.com/locate/vaccinehb201

    Network Coding with Multimedia Transmission and Cognitive Networking: An Implementation based on Software-Defined Radio

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    Network coding (NC) is considered a breakthrough to improve throughput, robustness, and security of wireless networks. Although the theoretical aspects of NC have been extensively investigated, there have been only few experiments with pure NC schematics. This paper presents an implementation of NC under a two-way relay model and extends it to two non-straightforward scenarios: (i) multimedia transmission with layered coding and multiple-description coding, and (ii) cognitive radio with Vandermonde frequency division multiplexing (VFDM). The implementation is in real time and based on software-defined radio (SDR). The experimental results show that, by combining NC and source coding, we can control the quality of the received multimedia content in an on-demand manner. Whereas in the VFDM-based cognitive radio, the quality of the received content in the primary receiver is low (due to imperfect channel estimation) yet retrievable. Our implementation results serve as a proof for the practicability of network coding in relevant applications
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