Displaying publications 41 - 60 of 69 in total

Abstract:
Sort:
  1. Susilowati IH, Nakatani H, Nugraha S, Pengpid S, Keawpan W, Hasiholan BP, et al.
    Glob Health Med, 2020 Dec 31;2(6):350-359.
    PMID: 33409414 DOI: 10.35772/ghm.2020.01061
    In this current COVID-19 pandemic, the elderly (60 years and over) are more vulnerable populations to be infected and become victims. In a disaster cycle, the various parts are usually divided into three stages, consisting of the pre-impact stage, the trans-impact stage, and the post-impact stage. It is necessary to explain how to handle the COVID-19 disaster for the elderly at each step (explain the meaning of pre-case, case (pre-hospital and hospital), and post-case phases, respectively). This paper presents the handling of COVID-19 for elderly in pre-case, case, and post-case phases in six Asia-Pacific countries (Indonesia, Thailand, Singapore, Malaysia, Vietnam, and Japan). The data and information come from COVID-19 official websites of each country, including information from World Health Organization (WHO), United States Centers for Disease Control and Prevention (CDC), mass media, and professional associations. The handling of COVID-19 in the pre-case phase has been done correctly for the elderly, especially in Indonesia, Japan, Thailand, and Singapore. In the case phase (pre-hospital and hospital), only Indonesia, Japan, and Thailand have followed special handling protocols for the elderly, particularly for those who have comorbidities and respiratory diseases. For the post-case phase, all countries have the same treatment protocol for all age groups, with none specific for the elderly.
    Matched MeSH terms: Mass Media
  2. Talib R, Ali O, Arshad F, Kadir KA
    Asia Pac J Clin Nutr, 1997 Jun;6(2):84-7.
    PMID: 24394705
    A study was undertaken in FELDA (Federal Land Development Authority) resettlement scheme areas in Pahang, Malaysia, to determine the effectiveness of group dietary counselling in motivating diabetic patients to achieve good dietary habits, and weight and diabetes control. Sixty-one non-insulin dependent diabetes mellitus (NIDDM) patients were randomly assigned to either the experimental or control group. The experimental group received six sessions of group dietary counselling over 5 months and the control group received mass media diabetes-educational program during the same period. The one hour group dietary counselling sessions discussed general knowledge of diabetes, food groups for meal planning, the importance of dietary fibre-rich foods, types of fat in food, exercise and weight control. The experimental group met monthly with a dietitian as a counsellor. Effectiveness was assessed by improvement in food choice, and decline in percentage glycated haemoglobin (total HbA1) or body mass index (BMI). Measurements were made at a baseline visit, every two months during the six month program, and six months afterwards. Patients in the experimental group improved their food choices, resulting in a healthier diet high in unrefined carbohydrates and dietary fibre rich foods, and low in fat. There were significant reductions of their percentage total HbA1 levels and BMI following the counselling sessions, which decreased further six months after the program compared with patients in the control group. Thus group dietary counselling is effective in motivating NIDDM patients to achieve better food choice, and related weight and glycaemic control in a Malaysian setting.
    Matched MeSH terms: Mass Media
  3. Shakeel S, Nesar S, Rahim N, Iffat W, Ahmed HF, Rizvi M, et al.
    J Pharm Bioallied Sci, 2017 Oct-Dec;9(4):266-271.
    PMID: 29456378 DOI: 10.4103/jpbs.JPBS_327_16
    Aims: Despite an increased popularity of print and electronic media applications, there is a paucity of data reflecting doctors' opinions regarding efficient utilization of these resources for the betterment of public health. Hence, this study aimed to investigate the perception of physicians toward the effect of electronic and print media on the health status of patients.
    Setting and Design: The current research is a cross-sectional study conducted from January 2015 to July 2015. The study population comprised physicians rendering their services in different hospitals of Karachi, Pakistan, selected by the nonprobability convenience sampling technique. In this study, 500 questionnaires were distributed through email or direct correspondence.
    Methods and Materials: Physicians' perception toward the impact of electronic and print media on the health status of patients was assessed with a 20-item questionnaire. Different demographic characteristics, such as age, gender, institution, position, and experience of respondents, were recorded. Quantitative data were analyzed with the use of Statistical Package for Social Sciences, version 20.0 (SPSS, Chicago, IL). The association of the demographic characteristics of the responses of physicians was determined by one-way ANOVA using 0.05 level of significance.
    Results: In this study, 254 physicians provided consent to show their responses for research purposes. A response rate of 50.8% was obtained. Nearly one-third of the respondents negated that patients get health benefit using electronic and print media. The majority did not consider electronic and print media as lifestyle-modifying factors. Physicians thought that patients particularly do not rely on mass media for acquiring health information and consider healthcare professionals as unswerving information resource.
    Conclusions: Mass media can be productive resources to augment awareness among patients, although physicians seem unconvinced about the extended usage of print/electronic media.
    Matched MeSH terms: Mass Media
  4. Helmyati S, Kiasaty S, Amalia AW, Sholihah H, Kurnia M, Wigati M, et al.
    J Diabetes Metab Disord, 2020 Dec;19(2):749-757.
    PMID: 33553011 DOI: 10.1007/s40200-020-00555-8
    Purpose: The purpose of this study is to explore the preference and acceptance of white rice substitution with brown and black rice among young adults in Indonesia to prevent diabetes.

    Methods: This study used a qualitative design. Rice preference deeply explored using focus group discussion as a case-study. 85 informants with an average of ages 20 years old were divided into several groups. Several topics to discuss include the reasons to accept or reject brown and black rice, knowledge, attitude, motivation, and potency to substitute white rice.

    Results: Price was the main barrier to substitute white rice to brown and black rice. The participants have known brown rice from parents, mass media, and friends. Most of them were still unfamiliar with black rice. Culture also affected the preferences of the participants. To motivate people to change their white rice diet, creative packaging and segmentation of the sale were recommended.

    Conclusion: Substituting white to brown and black rice is still a challenge for young adults in Indonesia. Several barriers such as culture, accessibility, and affordability need to be considered. Further efforts are important to manage a program to increase brown and black rice consumption.

    Matched MeSH terms: Mass Media
  5. Al-Amiery AA, Kadhum AAH, Alobaidy AHM, Mohamad AB, Hoon PS
    Materials (Basel), 2014 Jan 27;7(2):662-672.
    PMID: 28788482 DOI: 10.3390/ma7020662
    Corrosion inhibitory effects of new synthesized compound namely 5,5'- ((1Z,1'Z)-(1,4-phenylenebis(methanylylidene))bis(azanylylidene))bis(1,3,4-thiadiazole-2-thiol) (PBB) on mild steel in 1.0 M HCl was investigated at different temperatures using open circuit potential (OCP), potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Results showed that PBB inhibited mild steel corrosion in acid solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Changes in impedance parameters suggested the adsorption of PBB on the mild steel surface, leading to the formation of protective films.
    Matched MeSH terms: Mass Media
  6. Ahmad Izzat Ahmad Tajjudin, Dayana Asilah Mohd Nasaruddin, Hatta Sidi
    MyJurnal
    Objective: Mental health is often stigmatized in Asia, and electroconvulsive therapy (ECT) is portrayed negatively in the media. The objective of this short report is to obtain an insight on Asian countries’ perception on Electroconvulsive Therapy, mainly through the media.
    Methods: Several online movie databases were searched, with emphasis on Asian movies’ portrayal of Electroconvulsive Therapy.
    Results: Electroconvulsive Therapy (ECT) was portrayed in 9 television programme, 4 in films and 2 on Youtube. All patients (15) had no proper information given on possible side effects and consent not taken in all of them. 5 patients (33%) were tortured via ECT, 3(20%) of them had, ECT for Schizophrenia. In all scenes (15/15, 100%) ECT were given without general anaesthesia and the patients were fully awake. Basic monitoring (2/15, 13%) was performed, and all patients had no oxygenation. Tonic Clonic seizures were visible because all patients received no muscle relaxant. Bilateral electrode's placements (13/15, 87%) were common. One (6.6%) patient had a trilateral electrode placement. Most patients (9/15, 60%) received one shock, 4 patients (27%) received 2 shocks. One patient (6.6%) received 3 and 1 patient (6.6%) 4 shocks. 100% of patients were in obvious discomfort and ECT was portrayed as barbaric. There was no death depicted post ECT.
    Conclusion: ECT is under portrayed in the Asian media. Only the Indian and Pakistani medium broached the subject. In the majority of the scenes, ECT was portrayed
    negatively. This shows a total lack of knowledge of ECT among the Asian population. Alarmingly, ECT was used as a torture device in 5 mediums. This only adds to the stigma of ECT in Asia. More needs to be done to correct the misconceptions of ECT in Asia.
    Matched MeSH terms: Mass Media
  7. Abidin MSZ, Matsumura R, Anisuzzaman M, Park JH, Muta S, Mahmood MR, et al.
    Materials (Basel), 2013 Nov 06;6(11):5047-5057.
    PMID: 28788375 DOI: 10.3390/ma6115047
    We report the crystallization of electrodeposited germanium (Ge) thin films on n-silicon (Si) (100) by rapid melting process. The electrodeposition was carried out in germanium (IV) chloride: propylene glycol (GeCl₄:C₃H₈O₂) electrolyte with constant current of 50 mA for 30 min. The measured Raman spectra and electron backscattering diffraction (EBSD) images show that the as-deposited Ge thin film was amorphous. The crystallization of deposited Ge was achieved by rapid thermal annealing (RTA) at 980 °C for 1 s. The EBSD images confirm that the orientations of the annealed Ge are similar to that of the Si substrate. The highly intense peak of Raman spectra at 300 cm(-1) corresponding to Ge-Ge vibration mode was observed, indicating good crystal quality of Ge. An additional sub peak near to 390 cm(-1) corresponding to the Si-Ge vibration mode was also observed, indicating the Ge-Si mixing at Ge/Si interface. Auger electron spectroscopy (AES) reveals that the intermixing depth was around 60 nm. The calculated Si fraction from Raman spectra was found to be in good agreement with the value estimated from Ge-Si equilibrium phase diagram. The proposed technique is expected to be an effective way to crystallize Ge films for various device applications as well as to create strain at the Ge-Si interface for enhancement of mobility.
    Matched MeSH terms: Mass Media
  8. Shagar PS, Donovan CL, Loxton N, Boddy J, Harris N
    Appetite, 2019 03 01;134:59-68.
    PMID: 30586595 DOI: 10.1016/j.appet.2018.12.025
    Despite growing research investigating prevalence rates of BD among Malaysian women, there has been limited research conducted in Malaysia with respect to factors contributing to its development and consequences. This study tested a subsection of the Tripartite Influence Model, investigating whether sociocultural influences (family, peers, media) lead to thin ideal internalization, which in turn lead to body dissatisfaction (BD) and subsequently restrained eating and bulimic behaviours in both Australian and Malaysian women. Participants were 421 Australian and 399 Malaysian female emerging adults aged between 18 and 25 years, (M = 20.76; SD = 2.86) who completed questionnaires assessing sociocultural influences, thin ideal internalization, body dissatisfaction, restrained eating and bulimic behaviours. The model, largely supported in both cultures, had two points of difference. For Malaysian but not Australian women, family influence was significantly linked with internalization of the thin ideal. Although BD was significantly linked with restrained eating as predicted for Australian women (albeit rather weakly), it was not significantly linked with restrained eating for Malaysian women. The striking similarity of results across both cultures, suggests that Western body ideals, with their corresponding negative sequelae, have infiltrated the collectivist and developing nation of Malaysia.
    Matched MeSH terms: Mass Media
  9. Noor Zalikha Mohamed Islam, Nadras Othman, Zulkifli Ahmad, Hanafi Ismail
    Sains Malaysiana, 2011;40:1123-1127.
    This paper describes the effect of pro-degradant additives (PDA) on photo-oxidative aging of polypropylene (PP) films after being time accelerated in UV-weathering chamber. Thin films (0.12 mm) containing these additives were prepared by sheeting process. The effect of UV on PP films in the presence of these additives was investigated. Changes in the PP films appearance, tensile properties and carbonyl index (CI) were used to investigate the degradation behavior. The films became completely pulverised after 100 h of photo-oxidative treatment and could not be tested further. Films containing PDA showed rapid loss in tensile properties within 100 h of photo-oxidative aging. In addition, the CI results of photo-oxidative films increased with increasing PDA amount within the time interval of aging and the activity was due to the mechanism reaction of PP with PDA particles. During the aging process the material becomes denser due to tighter packing and incorporation of oxygen into the amorphous regions of the polymer. The results indicated that the presence of PDA contributed to the photo degradation and the activity was very much influenced by the amount PDA.
    Matched MeSH terms: Mass Media
  10. Asiyanbi, T.T., Bio-Sawe, W., Idris, M.A., Hammed, A.M.
    MyJurnal
    The advent of green technology has flourished biomolecule applications in medical, pharmaceutical and food products. Unlike synthetic materials, gelatin-polysaccharide matrixes are generally recognized as safe (GRAS). Gelatin-polysaccharide complexes are currently being utilized for the development of nano- and micro-particles, hydrogel, aerogel and films. Gelatin-polysaccharide based materials have offered improved characteristics depending on the type and concentration of polysaccharide and crosslinking agent. Gelatin-polysaccharide based materials function as bioactive compounds entrapment and encapsulation and anti-bacteria. This review provides concise information on the theory and technological applications of gelatin-polysaccharides based materials.
    Matched MeSH terms: Mass Media
  11. Alwi SA, Rubiah ZS, Lee PY, Mallika PS, Haizal MN
    Climacteric, 2010 Dec;13(6):553-60.
    PMID: 19958163 DOI: 10.3109/13697130903470319
    To determine the usage of hormone replacement therapy (HRT) and knowledge about HRT among women of Sarawak in Malaysia.
    Matched MeSH terms: Mass Media
  12. Karimah Hanim, A.A., Razman, M.R., Jamalludin, A.R., Nasreen, E.H., Htike Myat Phyu, SweSwe, L., et al.
    MyJurnal
    Background: With increasing number of dengue cases in Malaysia, it’s of utmost importance that immediate
    action be taken to limit the epidemic. Since dengue control is a behavioral problem, the knowledge,
    attitude and practice in population needs to be studied in order to control the disease. Hence, the aim of
    this study is to assess knowledge, attitude and practice regarding dengue and its associated factors among
    adult residents of Felda Sungai Panching Timur (SPT), Kuantan, Pahang, 2014.

    Method: A cross sectional
    study was carried out involving 265 adult respondents. A face to face interview questionnaire which was
    divided into 2 parts (Part A: Sociodemoghraphic; Part B: Knowledge, Attitude and Practice) was used. Data
    was analyzed using descriptive statistics, simple and multiple logistic regression.

    Results: 53.2% of the
    respondents had good knowledge about dengue and it was found that the main source of information from
    mass media (76.6%). However, only 43.4% were found to have good attitude towards dengue. Multiple
    Logistic Regression analysis showed there was no association between sociodemographic characteristics with
    the level of knowledge and attitude towards dengue. There was also no association found between
    knowledge of dengue and the attitude of the respondents towards dengue. Descriptive analysis on the
    practice of dengue showed majority of the respondents who had possible breeding site for Aedes mosquitos
    (water container, drains/gutter roof/flower pots/tires) in their compound practiced good habit in
    preventing the Aedes mosquitoes from breed.

    Conclusion: Although knowledge and practice towards dengue
    is good, their attitude require improvement.
    Matched MeSH terms: Mass Media
  13. Alrimawi BH, Chan MY, Ooi XY, Chan SY, Goh CF
    Polymers (Basel), 2021 Feb 15;13(4).
    PMID: 33671895 DOI: 10.3390/polym13040578
    Rice starch is a promising biomaterial for thin film development in buccal drug delivery, but the plasticisation and antiplasticisation phenomena from both plasticisers and drugs on the performance of rice starch films are not well understood. This study aims to elucidate the competing effects of sorbitol (plasticiser) and drug (antiplasticiser) on the physicochemical characteristics of rice starch films containing low paracetamol content. Rice starch films were prepared with different sorbitol (10, 20 and 30% w/w) and paracetamol contents (0, 1 and 2% w/w) using the film casting method and were characterised especially for drug release, swelling and mechanical properties. Sorbitol showed a typical plasticising effect on the control rice starch films by increasing film flexibility and by reducing swelling behaviour. The presence of drugs, however, modified both the mechanical and swelling properties by exerting an antiplasticisation effect. This antiplasticisation action was found to be significant at a low sorbitol level or a high drug content. FTIR investigations supported the antiplasticisation action of paracetamol through the disturbance of sorbitol-starch interactions. Despite this difference, an immediate drug release was generally obtained. This study highlights the interplay between plasticiser and drug in influencing the mechanical and swelling characteristics of rice starch films at varying concentrations.
    Matched MeSH terms: Mass Media
  14. Schliemann D, Paramasivam D, Dahlui M, Cardwell CR, Somasundaram S, Ibrahim Tamin NSB, et al.
    BMC Cancer, 2020 Mar 25;20(1):252.
    PMID: 32213173 DOI: 10.1186/s12885-020-06742-3
    BACKGROUND: Colorectal cancer (CRC) cases are detected late in Malaysia similar to most Asian countries. The Be Cancer Alert Campaign (BCAC) was a culturally adapted mass media campaign designed to improve CRC awareness and reduce late detection in Malaysia. The evaluation of the BCAC-CRC aimed to assess campaign reach, campaign impact and health service use.

    METHODS: Participants aged ≥40 years (n = 730) from randomly selected households in Selangor State Malaysia, completed interview-based assessments. Campaign reach was assessed in terms of responses to an adapted questionnaire that was used in evaluations in other countries. The impact of the campaign was assessed in terms of awareness, confidence to detect symptoms and self-efficacy to discuss symptoms with a doctor as captured by the Cancer Awareness Measure (CAM). CAM was administered before-and-after campaign implementation and responses by BCAC recognisers (i.e. participants who recognised one or more of the BCAC television, radio or print advertisements when prompted) and non-recognisers (i.e. participants who did not recognise any of the BCAC advertisements) were compared analytically. Logistic regression analysed comparative differences in cancer awareness by socio-demographic characteristics and recognition of the BCAC materials.

    RESULTS: Over 65% of participants (n = 484) recognised the BCAC-CRC. Campaign-recognisers were significantly more likely to be aware of each CRC symptom at follow-up and were more confident about noticing symptoms (46.9% vs 34.9%, p = 0.018) compared to non-recognisers. There was no difference between groups in terms of self-efficacy to see a doctor about symptoms. Improved symptoms awareness at follow-up was lower for Indians compared to Malays (adjusted odds ratio (OR) 0.53, 95% Confidence Interval (CI): 0.34, 0.83, p = 0.005). Health service use data did not indicate an increase in screening activity during or immediately after the campaign months.

    CONCLUSION: Overall, the findings of the evaluation indicated that the culturally adapted, evidence-based mass media intervention improved CRC symptom awareness among the Malaysian population; and that impact is more likely when a campaign operates a differentiated approach that matches modes of communication to the ethnic and social diversity in a population.

    Matched MeSH terms: Mass Media/statistics & numerical data*
  15. Schliemann D, Su TT, Paramasivam D, Somasundaram S, Ibrahim Tamin NSB, Dahlui M, et al.
    Transl Behav Med, 2019 11 25;9(6):1087-1099.
    PMID: 31583402 DOI: 10.1093/tbm/ibz134
    Increasingly, policy and research attention is being directed toward improving global health in low- and middle-income countries. This study investigated the cultural adaptation of a UK-designed and developed evidence-based mass media campaign with the aim of improving colorectal cancer and breast cancer awareness in Malaysia. Guided by the heuristic framework of cultural adaptation, a multidisciplinary team adapted the UK Be Cancer Aware programme for implementation in the Malaysian context. The approach included five steps: (a) information gathering and needs assessment; (b) preliminary design; (c) preliminary testing; (d) refinement; and (e) final trial. Key findings from the information gathering stage related to the need to take into account differences in ethnicity, religion, and beliefs about cancer. Discussions with experts indicated that particular words were not acceptable in Malay culture and that specific aspects were "taboo" (e.g., showing pictures of breasts in relation to breast cancer on TV). Stage 3 of the analysis revealed that the presentation of cancer survivors rather than health professionals on programme materials was preferred by Malaysians and that there was a poor level of awareness about colorectal cancer. The results were used systematically to adapt two culturally suitable cancer awareness mass media campaigns for implementation in Malaysia. The developed materials were in line with government priorities and took into account the local health care system structure. The establishment of a partnership with key stakeholders (e.g., the Ministry of Health and the lead patient advocacy organization) and the application of a systematic approach to address cultural factors and resource constraints contribute to the successful implementation of public health programmes in global health settings.
    Matched MeSH terms: Mass Media*
  16. Schliemann D, Su TT, Paramasivam D, Treanor C, Dahlui M, Loh SY, et al.
    J Glob Oncol, 2019 04;5:1-20.
    PMID: 30969807 DOI: 10.1200/JGO.19.00011
    PURPOSE: The main objective of this systematic review was to identify whether mass and small media interventions improve knowledge and attitudes about cancer, cancer screening rates, and early detection of cancer in Asia.

    METHODS: The review was conducted according to a predefined protocol. Medline, EMBASE, CINAHL, Web of Science, Cochrane Library, and Google Scholar were searched in September 2017, and data extraction and rating of methodologic study quality (according to Joanna Briggs Institute rating procedures) were performed independently by reviewers.

    RESULTS: Twenty-two studies (reported across 24 papers) met the inclusion criteria. Most studies (n = 21) were conducted in high or upper-middle income countries; targeted breast (n = 11), cervical (n = 7), colorectal (n = 3), or oral (n = 2) cancer; and used small media either alone (n = 15) or in combination with mass media and other components (n = 5). Studies regarding cancer screening uptake were of medium to high quality and mainly reported positive outcomes for cervical cancer and mixed results for breast and colorectal cancer. The methodologic strength of research that investigated change in cancer-related knowledge and the cost effectiveness of interventions, respectively, were weak and inconclusive.

    CONCLUSION: Evidence indicated that small media campaigns seemed to be effective in terms of increasing screening uptake in Asia, in particular cervical cancer screening. Because of the limited number of studies in Asia, it was not possible to be certain about the effectiveness of mass media in improving screening uptake and the effectiveness of campaigns in improving cancer-related knowledge.

    Matched MeSH terms: Mass Media*
  17. Schliemann D, Htay MNN, Dahlui M, Paramasivam D, Cardwell CR, Ibrahim Tamin NSB, et al.
    BMJ Open, 2020 Aug 20;10(8):e036503.
    PMID: 32819988 DOI: 10.1136/bmjopen-2019-036503
    OBJECTIVE: To evaluate the impact of a mass media campaign in terms of improving breast cancer (BC) symptoms awareness and screening uptake.

    DESIGN: Before-and after-study with comparator groups.

    SETTING: Selangor State, Malaysia.

    PARTICIPANTS: Malaysian women aged >40 years (n=676) from randomly selected households.

    INTERVENTION: A culturally adapted mass media campaign (TV, radio, print media and social media).

    PRIMARY AND SECONDARY OUTCOME MEASURES: The primary endpoint was BC symptoms awareness, which was assessed with the Breast Cancer Awareness Measure precampaign and postcampaign. Secondary outcomes included campaign reach, self-efficacy to notice BC symptoms and clinical outcomes. Clinical breast examination and mammogram screening data were collected from hospitals and clinics.

    RESULTS: Most participants recognised at least one of the campaign materials (65.2%). The odds of seeing the campaign were lowest for Chinese women (adjusted OR 0.25, 95% CI 0.15 to 0.40) compared with Malays and for women aged >70 years (adjusted OR 0.47, 95% CI 0.23 to 0.94) compared with younger women. Participants who recognised the campaign were significantly more likely to have improved awareness postcampaign compared with non-recognisers particularly for key symptoms such as 'a lump or thickening in your breast' (88.9% vs 62.1%) and 'discharge or bleeding from nipple' (79.7% vs 55.3%). Improvement in symptoms awareness scores was not associated with sociodemographic variables.

    CONCLUSIONS: Implementation in Malaysia of an evidence-based mass media campaign from the UK that was culturally adapted appeared to lead to improved awareness about some BC symptoms, though various modes of media communication and perhaps other health education approaches may be required to extend the reach to diverse, multiethnic populations and all age groups.

    Matched MeSH terms: Mass Media
  18. Mohmad AR, Hamzah AA, Yang J, Wang Y, Bozkurt I, Shin HS, et al.
    Faraday Discuss, 2021 Apr 01;227:332-340.
    PMID: 33523053 DOI: 10.1039/c9fd00132h
    In this work, we report the synthesis and characterization of mixed phase Nb1+xS2 nanoflakes prepared by chemical vapor deposition. The as-grown samples show a high density of flakes (thickness ∼50 nm) that form a continuous film. Raman and X-ray diffraction data show that the samples consist of both 2H and 3R phases, with the 2H phase containing a high concentration of Nb interstitials. These Nb interstitials sit in between the NbS2 layers to form Nb1+xS2. Cross-sectional Energy Dispersive Spectroscopy analysis with transmission electron microscopy suggests that the 2H Nb1+xS2 region is found in thinner flakes, while 3R NbS2 is observed in thicker regions of the films. The evolution of the phase from 2H Nb1+xS2 to 3R NbS2 may be attributed to the change of the growth environment from Nb-rich at the start of the growth to sulfur-rich at the latter stage. It was also found that the incorporation of Nb interstitials is highly dependent on the temperature of the NbCl5 precursor and the position of the substrate in the furnace. Samples grown at high NbCl5 temperature and with substrate located closer to the NbCl5 source show higher incorporation of Nb interstitials. Electrical measurements show linear I-V characteristics, indicating the metallic nature of the Nb1+xS2 film with relatively low resistivity of 4.1 × 10-3Ω cm.
    Matched MeSH terms: Mass Media
  19. Quah HJ, Cheong KY
    Nanoscale Res Lett, 2013;8(1):53.
    PMID: 23360596 DOI: 10.1186/1556-276X-8-53
    The effects of different post-deposition annealing ambients (oxygen, argon, forming gas (95% N2 + 5% H2), and nitrogen) on radio frequency magnetron-sputtered yttrium oxide (Y2O3) films on n-type gallium nitride (GaN) substrate were studied in this work. X-ray photoelectron spectroscopy was utilized to extract the bandgap of Y2O3 and interfacial layer as well as establishing the energy band alignment of Y2O3/interfacial layer/GaN structure. Three different structures of energy band alignment were obtained, and the change of band alignment influenced leakage current density-electrical breakdown field characteristics of the samples subjected to different post-deposition annealing ambients. Of these investigated samples, ability of the sample annealed in O2 ambient to withstand the highest electric breakdown field (approximately 6.6 MV/cm) at 10-6 A/cm2 was related to the largest conduction band offset of interfacial layer/GaN (3.77 eV) and barrier height (3.72 eV).
    Matched MeSH terms: Mass Media
  20. Assunta M, Fields N, Knight J, Chapman S
    Tob Control, 2004 Dec;13 Suppl 2:ii4-12.
    PMID: 15564219
    STUDY OBJECTIVE: To review the tobacco industry's Asian environmental tobacco smoke (ETS) consultants programme, focusing on three key nations: China, Hong Kong, and Malaysia.
    METHODS: Systematic keyword and opportunistic website searches of formerly private internal industry documents.
    MAIN RESULTS: The release of the 1986 US Surgeon General's report on second hand smoke provoked tobacco companies to prepare for a major threat to their industry. Asian programme activities included conducting national/international symposiums, consultant "road shows" and extensive lobbying and media activities. The industry exploited confounding factors said to be unique to Asian societies such as diet, culture and urban pollution to downplay the health risks of ETS. The industry consultants were said to be "..prepared to do the kinds of things they were recruited to do".
    CONCLUSIONS: The programme was successful in blurring the science on ETS and keeping the controversy alive both nationally and internationally. For the duration of the project, it also successfully dissuaded national policy makers from instituting comprehensive bans on smoking in public places.
    Matched MeSH terms: Mass Media
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links