67 research outputs found
Isolation and Phenotypic Characterisation of Morphology in Fungus Beauveria Bassiana (Balsamo) Vuillemin Colony Naturally From Leaf Surface, Soil, and Insect as Host in Tomato Plantation
Virulence of fungus Beauveria bassiana as pathogen on insect can be predicted according to phenotypic character in colony morphology. First of all, isolates of three different habitats were taken. Furthermore, their phenotypic characters was further characterised in B. bassiana colony and the colony growth rate was also monitored. The three natural habitats comprised insects, soil in tomato plantation and the surface of tomato leaves. The result showed that B bassiana isolate managed to be isolated from the three natural habitats involving larva Spodoptera litura and Helicoverpa armigera, the soil, and surface of tomato leaves. B bassiana isolate of insect habitat represented phenotype in colony morphology with curved character, while isolate of the leaves\u27 surface and soil indicated phenotype in colony morphology with raised and bowl-shaped character. In addition to the colony characters, varied growth rate was also indicated by isolate from each habitat. Isolate of insect with curved colony character represented higher growth rate than that of the leaves\u27 surface or the soil with raised and bowl-shaped colony character. The colony with curved character represented phenotypic character of isolate B bassiana with high growth rate. Thus, B. bassiana isolate with the curved colony of insect served as an isolate which was expected to be virulent as controlling agent to biological elements
College students perception on physical education classes during their high school days
This purpose of this study is to identify and investigate whether there are similarities or differences between genders regarding the perceptions on physical activities of college university students in one of the largest University in Kuala Lumpur, Malaysia. The focus was on three main categories, namely general knowledge, physical education and scientific basis of physical activities. Each category contained questions which serve to evaluate their perceptions about physical activities. The questionnaire was adapted from a journal article on a study done by Mowatt, DePauw and Hulac (1988). This study investigates the perceptions of 113 students (55 males; 65 females) aged between 19 and 25 about physical activities, using the above-mentioned categories. Results of the t-test showed significant differences for general knowledge, t(23) = 3.9, p0.05 no significant differences in means were found between the male and female students
Effects of biofertilizer containing N-fixer, P and K solubilizers and AM fungi on maize growth: A greenhouse trial.
An in vitro study was undertaken to evaluate the compatibility of indigenous plant growth promoting rhizobacteria (PGPR) with commonly used inorganic and organic sources of fertilizers in tea plantations. The nitrogenous, phosphatic and potash fertilizers used for this study were urea, rock phosphate and muriate of potash, respectively. The organic sources of fertilizers neem cake, composted coir pith and vermicompost were also used. PGPRs such as nitrogen fixer; Azospirillum lipoferum, Phosphate Solubilizing Bacteria (PSB); Pseudomonas putida, Potassium Solubilizing Bacteria (KSB); Burkholderia cepacia and Pseudomonas putida were used for compatibility study. Results were indicated that PGPRs preferred the coir pith and they proved their higher colony establishment in the formulation except Azospirillum spp. that preferred vermicompost for their establishment. The optimum dose of neem cake powder
Whole exome re-sequencing implicates CCDC38 and cilia structure and function in resistance to smoking related airflow obstruction
Chronic obstructive pulmonary disease (COPD) is a leading cause of global morbidity and mortality and, whilst smoking remains the single most important risk factor, COPD risk is heritable. Of 26 independent genomic regions showing association with lung function in genome-wide association studies, eleven have been reported to show association with airflow obstruction. Although the main risk factor for COPD is smoking, some individuals are observed to have a high forced expired volume in 1 second (FEV1) despite many years of heavy smoking. We # hypothesised that these ‘‘resistant smokers’’ may harbour variants which protect against lung function decline caused by smoking and provide insight into the genetic determinants of lung health. We undertook whole exome re sequencing of 100 heavy smokers who had healthy lung function given their age, sex, height and smoking history and applied three complementary approaches to explore the genetic architecture of smoking resistance. Firstly, we identified novel functional variants in the ‘‘resistant smokers’’ and looked for enrichment of these novel variants within biological pathways. Secondly, we undertook association testing of all exonic variants individually with two independent control sets. Thirdly, we undertook gene-based association testing of all exonic variants. Our strongest signal of association with smoking resistance for a non-synonymous SNP was for rs10859974 (P = 2.3461024) in CCDC38, a gene which has previously been reported to show association with FEV1/FVC, and we demonstrate moderate expression of CCDC38 in bronchial epithelial cells. We identified an enrichment of novel putatively functional variants in genes related to cilia structure and function in resistant smokers. Ciliary function abnormalities are known to be associated with both smoking and reduced mucociliary clearance in patients with COPD. We suggest that genetic influences on the development or function of cilia in the bronchial epithelium may affect growth of cilia or the extent of damage caused by tobacco smoke
Thermal comfort field studies in two certified energy efficient office buildings in a tropical climate
Penggunaan E-Lkpd Berbasis Live Worksheet pada Konsep Protista terhadap Hasil Belajar Peserta Didik Kelas X Sman 7 Banjarmasin
Latar Belakang: Pada masa pandemi Covid-19 ini tidak mendukung pembelajaran secara offline, sehingga guru harus berinovasi agar lebih mudah memberikan materi ajar dan tugas kepada peserta didik tanpa adanya tatap muka. Salah satunya menggunakan e-LKPD live worksheet sebagai media pembelajaran dan evaluasi yang dapat diakses secara online kapan saja dan dimana saja.
Tujuan: Mendeskripsikan (1) pengaruh penggunaan e-LKPD berbasis live worksheet pada konsep protista terhadap hasil belajar kognitif produk (2) pengaruh penggunaan e-LKPD berbasis live worksheet pada konsep protista terhadap hasil belajar kognitif proses.
Metode: Menggunakan pendekatan quasi experiment dengan desain The Non-equivalent Control Group Design. Sampel penelitian adalah X MIPA 3 dan 4 yang masing-masing berjumlah 28 orang sebagai kelas eksperimen dan kelas X MIPA 2 berjumlah 29 orang sebagai kelas kontrol. Teknik analisis data untuk hasil belajar kognitif menggunakan uji Mann-Whitney.
Hasil: Menunjukkan (1) terdapat pengaruh penggunaan e-LKPD berbasis live worksheet terhadap hasil belajar kognitif produk peserta didik (sig. 0,045), (2) terdapat pengaruh penggunaan e-LKPD berbasis live worksheet terhadap hasil belajar kognitif proses peserta didik (sig. 0,038).
Kesimpulan: Penggunaan e-LKPD memberikan kemudahan bagi guru karena dapat menampilkan materi ajar dan tugas dalam bentuk gambar serta video, dapat menghemat waktu dan biaya. Kemudian penggunaan e-LKPD ini memudahkan peserta didik untuk mengerjakan tugas secara daring kapan saja dan dimana saja selama terkoneksi dengan jaringan internet. Diharapkan dari hasil penelitian tentang penggunaan e-LKPD dapat digunakan dalam proses pembelajaran karena berpengaruh terhadap hasil belajar kognitif produk dan proses peserta didik
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