نتایج جستجو برای: sphaerotheca
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Sir, Three male patients aged 35, 40 and 42 years, were admitted to our unit with a history of severe ataxia. All three patients had three attacks of malaria within a period of four months. All three were treated with chloroquine and they lived in a malarial area in the northern part of Sri Lanka. They developed ataxia approximately two weeks after treatment for the third attack of malaria. The...
Background: Single nucleotide polymorphisms (SNPs) in the Plasmodium vivax dihydrofolate reductase (Pfdhfr) and dihydropteroate synthetase (Pvdhps) genes cause parasite resistance to the antifolate drug combination, sulphadoxine/ pyrimethamine (SP). Monitoring these SNPs provide insights into the level of drug pressure caused by SP use and presumably other antifolate drugs. In Sri Lanka, chloro...
BACKGROUND West Nile virus (WNV) has emerged as one of the most common causes of epidemic meningoencephalitis worldwide. Most human infections are asymptomatic. However, neuroinvasive disease characterized by meningitis, encephalitis and/or acute flaccid paralysis is associated with significant morbidity and mortality. Although outbreaks have been reported in Asia, human WNV infection has not b...
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus responsible for several significant outbreaks of debilitating acute and chronic arthritis and arthralgia over the past decade. These include a recent outbreak in the Caribbean islands and the Americas that caused more than 1 million cases of viral arthralgia. Despite the major impact of CHIKV on global health, viral determinants that prom...
The aggregation pheromone of Carpophilus hemiptenls (L.), previously isolated and identified using wind-tunnel bioassays, was field tested in California. A 4-d preliminary study in plantings of figs and stone fruits was followed by long-term studies in a date garden (12 mo) and a stone fruit orchard (11 wk). The pheromone was most effective in combination with host-related coattractants such as...
INTRODUCTION Vespa affinis is a hornet widely distributed in Sri Lanka and it is responsible for the highest number of deaths related to Hymenoptera stings. Apart from the early reactions, victims often die in hospital many hours later due to complications such as myocardial infarction and multiple organ failure. Increased microvascular permeability and acute pulmonary oedema as the primary pat...
سفیدک پودری خیار، ناشی از قارچ podosphaera xanthii (syn. sphaerotheca fuliginea) و لکه موجی گوجه فرنگی که توسط قارچ alternaria solani ایجاد می شود، دو بیماری شایع و مخر ب این محصولات در سراسر جهان محسوب می شوند. کنترل بیماری های یادشده عمدتاً متکی به کاربرد قارچ کش هاست. لیکن با توجه به تبعات سوء زیست محیطی ناشی از کاربرد آفت کش ها، جایگزینی این ترکیبات شیمیایی با روش های مدیریتی کم خطر ضروری به...
جنس Rosa از تیره Rosaceae حدود 18 گونه در ایران دارد (صرف‌نظر از اسامی مترادف) که 12 گونه از آنها درختچه‌ای خودرو هستند. از این گونه‌های خودرو، گونه‌های Rosa persica، R. orientalis، R. pulverulenta، R. iberica، R. hemisphaeria، R. boissieri وR. elymatica علاوه بر ایران در مناطق ترکمنستان، افغانستان، آسیای مرکزی، آناتولی، ارمنستان، آذربایجان روسیه، فققاز، سوریه، لبنان و تالش نیز می‌رویند. فرم‌ه...
The agricultural production system in Sri Lanka consists of two traditional and well-defined components. One is the plantation section, established during the colonial period, consisting of large units, and producing perennial crops such as coffee, tea, rubber, and coconut mainly for export. The other is the smallholder sector comprised of small farms which produce most of the country’s rice, v...
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