Abstract：
:The author describes the design and operation of an automatic molluscicide dispenser for use in flowing water. The equipment, which consists basically of a measuring weir coupled to a float-activated siphon, was designed for simplicity, low cost, construction with commonly available materials, and operation by untrained personnel. Observations in the field have shown that the dispenser increases the accuracy and consistency of dosage, reduces manpower requirements, and improves molluscicidal effectiveness.
journal_name
Bull World Health Organjournal_title
Bulletin of the World Health Organizationauthors
KLOCK JWsubject
Has Abstractpub_date
1956-01-01 00:00:00pages
639-46issue
4eissn
0042-9686issn
1564-0604journal_volume
14pub_type
杂志文章abstract：:In laboratory experiments sterile males produced by crossing member species of the Anopheles gambiae complex competed very successfully with normal males for normal females and the latter when mated with sterile males laid sterile eggs.A field trial was arranged in a small isolated village near Bobo-Dioulasso, Upper V...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1970-01-01 00:00:00
abstract：:In the past, several indices have been proposed to evaluate the threat of vectors to the community. Such indices, if accurately determined, could serve to assess the effectiveness of vector control campaigns. In this paper, a "risk of infection" index is introduced for the case of urban filariasis transmitted by Culex...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1967-01-01 00:00:00
abstract：OBJECTIVE:To estimate post-traumatic stress disorder (PTSD) symptoms in those injured and not injured by landmines or unexploded ordnance (UXO) in rural Lao People's Democratic Republic and to determine whether the perception of social support was associated with PTSD symptom severity. METHODS:A community survey was c...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/BLT.12.115311
更新日期：2013-10-01 00:00:00
abstract：:The WHO Alliance for Global Elimination of Trachoma by 2020 has increased the need to identify ocular chlamydial infections by clinical examination in areas of both high and low prevalence. The relationship between clinically active trachoma (as defined by clinical examination) and chlamydial infection is known for ar...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：OBJECTIVE:To assess the socioeconomic, geographical and demographic inequities in the use of postnatal health-care services in low- and middle-income countries. METHODS:We searched Medline, Embase and Cochrane Central databases and grey literature for experimental, quasi-experimental and observational studies that had...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章,meta分析,评审
doi：10.2471/BLT.14.140996
更新日期：2015-04-01 00:00:00
abstract：:For 164 days mature chickens received a daily diet containing 40 g of wheat treated with organomercurial fungicide and 80 g of untreated diet. A control group received 120 g of normal diet daily. The experimental group was then split - half receiving the same diet for a further 155 days, by which time all had been kil...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1976-01-01 00:00:00
abstract：:Measurements of spermatheca diameter and wing length were made on 8 East African mosquito populations comprising Anopheles merus and A. gambiae species A, species B, and the "Bwamba cytotype" (=species D). The results showed that, on average, the spermatheca in species A females is larger than in species B. In each of...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1972-01-01 00:00:00
abstract：:In order to contribute to knowledge of the sporogonic cycle of malaria parasites, 3 batches of Anopheles labranchiae atroparvus were infected with the VS Romanian strain of Plasmodium malariae by feeding them on 2 patients undergoing malariotherapy in Romania. Of the 310 infected mosquitos 59 were dissected for ookine...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1968-01-01 00:00:00
abstract：OBJECTIVE:To estimate the global cost of establishing and operating the educational and refractive care facilities required to provide care to all individuals who currently have vision impairment resulting from uncorrected refractive error (URE). METHODS:The global cost of correcting URE was estimated using data on th...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/BLT.12.104034
更新日期：2012-10-01 00:00:00
abstract：Objective:To estimate the average treatment effect of working past the current retirement age on the health of Japanese men. Methods:We used publicly available data from the National Survey of Japanese Elderly, extracting a sample of 1288 men who were 60 years or older. Survey respondents were followed-up for at most ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/BLT.18.215764
更新日期：2018-12-01 00:00:00
abstract：:Studying the susceptibility of 189 Neisseria meningitidis strains to penicillin, amoxicillin, cefotaxime, ceftriaxone, chloramphenicol and rifampicin by determination of minimum inhibitory concentrations (MICs) by agar dilution (reference method), E-test and disc diffusion method on Mueller-Hinton agar at 37 degrees C...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Signs in the fundus oculi, long regarded as prognostic in hypertensive disease, have been shown to be subject to gross observer error and bias when assessed in conventional ways. The authors describe unconventional ways of assessing diminution of vascularity in a population sample of men aged 50 and also in a group of...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1967-01-01 00:00:00
abstract：:Contributions made by five groups of investigators to the knowledge of the stability of different iodine compounds in salt, and of the extent of the losses of iodine which may occur when iodized salt is exposed to different conditions of storage and use, are discussed by the author.STABILITY OF THE IODINE COMPONENT IN...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1953-01-01 00:00:00
abstract：:The total cost of the Expanded Programme on Immunization and of its various components in the Gambia over a period of one year (from July 1980 to June 1981) was investigated, and the costs per immunization dose and per fully immunized child were calculated. The total costs were to a large extent (45%) due to the cost ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:A collaborative study on the laboratory diagnosis of trachoma was carried out in three laboratories. A standardized complement fixation (CF) test with chlamydial (bedsonial) group antigen was found to be highly reproducible. The results obtained by different laboratories using the method and reagents suggested by the ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1973-05-01 00:00:00
abstract：:The Haemosporidia, which comprise the malaria parasites, have probably evolved from Coccidia of the intestinal epithelium of the vertebrate host by adaptation first to some tissues of the internal organs and then to life in the circulating cells of the blood.The present opinion is that, among the malaria parasites of ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1965-01-01 00:00:00
abstract：:Division of Brucella strains into three species has long been based on differences in growth characteristics on certain dye-agar media and on variations in H(2)S production on liver agar slants. But certain workers believe these differences to be merely quantitative, such as are found between varieties of one species....
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1961-01-01 00:00:00
abstract：:The biological effects of tuberculin in an organism infected with tubercle bacilli are due to an unknown number of different substances, which are present in varying concentrations in different tuberculin preparations. Consequently, the response to tuberculin tests with various products is likely to vary with the biol...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1964-01-01 00:00:00
abstract：:Asthma is a very common chronic disease that occurs in all age groups and is the focus of various clinical and public health interventions. Both morbidity and mortality from asthma are significant. The number of disability-adjusted life years (DALYs) lost due to asthma worldwide is similar to that for diabetes, liver ...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：2005-07-01 00:00:00
abstract：:Structural quality is a key element in the quality of care provided at the primary level, which aims to offer health care interventions of proven efficacy. This assessment of the structural quality of Tanzanian primary health services indicated serious weaknesses in the available physical infrastructure, as well as su...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Health interventions vary substantially in the degree of effort required to implement them. To some extent this is apparent in their financial cost, but the nature and availability of non-financial resources is often of similar importance. In particular, human resource requirements are frequently a major constraint. W...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：/S0042-96862005000400013
更新日期：2005-04-01 00:00:00
abstract：OBJECTIVE:To improve the use and dosage of antibiotics prescribed at Commune Health Stations in Viet Nam, and in so doing find out whether antibiotic dosage can be easily and reliably measured as a drug-use indicator. METHODS:All commune health workers from the 217 commune health stations in Hai Phong Province, Viet N...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:This paper examines two innovative educational initiatives for the Ecuadorian public health workforce: a Canadian-funded Masters programme in ecosystem approaches to health that focuses on building capacity to manage environmental health risks sustainably; and the training of Ecuadorians at the Latin American School o...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/blt.07.045393
更新日期：2009-04-01 00:00:00
abstract：:Field trials of various molluscicides-notably sodium pentachlorophenate, copper sulfate and dinitro-o-cyclohexylphenol-were carried out in Brazil in order to test their effectiveness against the aquatic intermediate hosts of human bilharziasis. Sodium pentachlorophenate was found to be the most effective in relation t...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1958-01-01 00:00:00
abstract：Objective:To determine the prevalence of and factors associated with dispensing antibiotics without a prescription in online and community pharmacies in China. Methods:We conducted a nationwide cross-sectional study of online and community pharmacies in 27 cities and counties in nine provinces in China (selected by mu...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：10.2471/BLT.19.242370
更新日期：2020-07-01 00:00:00
abstract：:This paper presents estimates of the prevalence of visual impairment and its causes in 2002, based on the best available evidence derived from recent studies. Estimates were determined from data on low vision and blindness as defined in the International statistical classification of diseases, injuries and causes of d...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：/S0042-96862004001100009
更新日期：2004-11-01 00:00:00
abstract：:The relationship between cardiovascular characteristics and mortality was investigated in an epidemiological study of heart disease in a representative adult rural community in Jamaica. Of 449 men and 469 women followed up for 5 years, 36 men and 28 women died and the data concerning their status as regards arterial p...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1972-01-01 00:00:00
abstract：:Aortic and coronary atherosclerosis and the prevalence of coronary stenosis and thrombosis were studied in subjects who had died of fresh or recurrent myocardial infarction or had suffered from myocardial infarction in the past. In general, severe atherosclerosis of the coronary arteries with stenosis and calcificatio...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1976-01-01 00:00:00
abstract：:A survey of bilharziasis and its vectors in certain countries of north-east Africa and of the Red Sea area, carried out between December 1951 and February 1952, is described within the framework of a review of the somewhat scattered and incomplete information already available on this subject in the literature. Clinic...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1956-01-01 00:00:00
abstract：:Malathion shows promise as a substitute for chlorinated-hydrocarbon insecticides in the control of malaria whenever the latter are unsuitable because of Anopheles resistance or other reasons. A field trial of malathion was carried out in 1963-64, covering an area of about 500 km(2) with a population of about 26 000, i...
journal_title：Bulletin of the World Health Organization
pub_type： 杂志文章
doi：
更新日期：1967-01-01 00:00:00
