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136 results for “natural conditions”
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Research ArticleOpen accessPhrase in the titlePhoretic Association and Facultative Parasitoidism Between Megaselia scalaris and Blowflies, Under Natural ConditionsJose Antonio Batista-Da-SilvaProblem statement: This is the first time that a phoretic association and facultative parasitoidism between Megaselia scalaris and blowflies (Diptera: Calliphoridae) has been reported under natural conditions. Approach: All fly specimens were collected in the mangrove swamp in Itaborai, RJ, Brazil. Results: A total of 291 flies were collected belonging to four (04) species of the family Calliphoridae: Chrysomya megacephala … …OnLine Journal of Biological Sciences, Vol. 12, Issue 1 · 28 Apr 2012 · 7,680 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleA Resource Conservation Technology for Adapting Argroecosystems to the New Natural Conditions of a Warming Climate in South-Eastern KazakhstanNaziya Suleimenova, Dastan Kalykov, Baglan Makhamedova et al.This article presents the results of research aimed at developing a resource conservation technology for the adaptation of the soybean agroecosystem to the new natural conditions of a warming climate. In particular, measures to combat drought have been studied: The efficiency of soil-protecting technology (Mini-till) and minimization of anthropogenic impact on soil, the effective use of soil moisture and its … …OnLine Journal of Biological Sciences, Vol. 21, Issue 2 · 25 Jun 2021 · 6,361 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHeat Generation/Absorption Effect on Natural Convection Flow in a Vertical Annulus with Time-Periodic Boundary ConditionsMichael O. Oni, Basant K. JhaThe role of heat generation/absorption on natural convection flow formation in a vertical annulus with prescribed time-periodic heating is investigated in this article. The governing continuity, momentum and energy equations are converted into ordinary differential equation using suitable transformations and closed form expressions are obtained for temperature distribution, velocity profile, Nusselt number, skin friction and mass flow rate in terms … …Journal of Aircraft and Spacecraft Technology, Vol. 3, Issue 1 · 27 Jul 2019 · 6,335 accessesView PDFCite
Research ArticleOpen accessIn the abstractEcological Situation of Poplar Species in the Aral Sea Region of KazakhstanBaikenzheyeva Ainur, Kurmanbayev Rakhat, Toktaganova Gulzhas et al.The study was conducted in response to the deteriorating environmental conditions in the Aral Sea region of Kazakhstan, characterized by the degradation of natural ecosystems, loss of biodiversity, and the disappearance of valuable tree species. Of particular importance is the investigation of the current status of populations of Populus pruinosa Schrenk and Populus diversifolia Schrenk, relic tree species of the … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 30 Sep 2026 · 574 accessesView PDFCite
Research ArticleOpen accessIn the abstractGenetic and Environmental Interactions in Spring Wheat Resistance to Bipolaris Sorokiniana Root Rot in KazakhstanYerlan Dutbayev, Ardak Bolatbekova, Aidana Kharipzhanova et al.Common root rot caused by Bipolaris sorokiniana represents a major constraint to wheat production in Kazakhstan. This study evaluated the resistance of 30 spring bread and durum wheat genotypes under diverse environmental and treatment conditions in two contrasting regions (Almaty and Aktobe) during 2024. The experimental design included three treatment regimes: fungicide application, artificial inoculation with the pathogen, and natural … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 7 Mar 2026 · 1,517 accessesView PDFCite
Research ArticleOpen accessIn the abstractUltrasonic Microwave Assisted Extraction, Chemical Characterization and Antioxidant Activity of Polysaccharides from Fig LeavesBaikangzhe Zheng, Yang Miao, Yi Zhou et al.This study employed ultrasonic-microwave-assisted extraction (UMAE) to isolate water-soluble polysaccharides from fig (Ficus carica L.) leaves (FLPs). Polysaccharide yield was used as the primary index to evaluate extraction efficiency. The effects of material-liquid ratio, microwave power, extraction temperature, and extraction time on polysaccharide yield were systematically investigated through single-factor experiments, followed by response surface methodology optimization. Structural characterization and antioxidant … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 4 · 3 Mar 2026 · 1,671 accessesView PDFCite
Research ArticleOpen accessIn the abstractEnhancing Drought Resistance in Spring Wheat (Triticum aestivum L.) Through Chelated Zinc Seed Treatment: An Experimental StudyBekzak Amantayev, Gulden Kipshakbayeva, Arysgul Turbekova et al.Climate change-induced drought is a significant threat to global food security, particularly affecting wheat yields. Despite various strategies to enhance drought resistance in crops, the effectiveness of chelated Zinc (Zn) as a seed treatment agent remains underexplored, especially in the early stages of wheat ontogenesis. This study aims to fill this gap by evaluating the effectiveness of zinc as a … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 26 Sep 2024 · 4,414 accessesView PDFCite
Review ArticleOpen accessIn the abstractFemale Sex Hormones Contribute to Vulnerability to Athero-Sclerosis: Overview of Mechanisms and Specific Risk FactorsAnastasia Vladimirovna Poznyak, Victoria Alexandrovna Khotina, Alexandra Alexandrovna Melnichenko et al.Atherosclerosis poses a significant challenge to the general population, with its prevalence particularly prominent among older individuals. Age, however, is not the sole determinant of risk, as gender also plays a crucial role. Sex-related disparities exist not only in the incidence of atherosclerosis but also in its progression and development. The intricate interplay of hormones in the female reproductive system … …OnLine Journal of Biological Sciences, Vol. 24, Issue 2 · 11 Jan 2024 · 4,633 accessesView PDFCite
Research ArticleOpen accessIn the abstractDifferential Gene Expression of Peroxide Resistant Protein (AhpC) in Planktonic and Biofilm State of Uropathogenic Escherichia coli CellsOmar Sadik Shalal, Ani-Simona SevastreThe gastrointestinal tract seems to be the primary reservoir of Uropathogenic Escherichia coli (UPEC) in humans. UPEC strains harbor the Urinary Tract (UT) and cause Urinary Tract Infections (UTI) which might represent a serious threat to human life. To counteract with the damage caused by the Reactive Oxygen Species (ROS), bacterial strains produce various enzymes and proteins like Alkyl hydroperoxide … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 13 Oct 2023 · 5,324 accessesView PDFCite
Review ArticleOpen accessIn the abstractSoil Hydraulic Conductivity and Soil Water Retention of Inland Peat on Various Land Covers (Case Study: Natural Peat and Burnt Peat)Fengky Florante Adji et al.This research aims to examine differences in the rate of saturated soil hydraulic conductivity (permeability) and unsaturated soil hydraulic conductivity (infiltration) and soil water retention with various pressures in peatland with different land covers. The study was conducted from June to October 2021. The research was conducted at the LAHG-Sebangau and at the KHDTK-Tumbang Nusa, central Kalimantan, Indonesia. Based on … …OnLine Journal of Biological Sciences, Vol. 23, Issue 3 · 19 May 2023 · 6,124 accessesView PDFCite