فهرست مطالب abdul hamid

The goal of this study is to forecast cash flow during the Covid-19 pandemic in food and beverage companies registered on the Indonesian stock exchange using gross profit, operational profit, and net profit. This study employs a sample of 18 businesses to make it quantifiable. SPSS version 26 was utilized for the analysis in this study. According to the study's findings, gross profit has a positive and significant impact on cash flow, operating profit and net profit do not, but gross profit, operating profit, and net profit all have an impact on cash flow simultaneously. It is clear that gross profit has the greatest impact on cash flow. This shows that the company's cash flow will increase along with its gross profit. This study provides input to enrich the theory about the relationship between cash flow and company profits.

This study aimed to investigate the diversity and types of arbuscular mycorrhizal fungi (AMF) associated with the wild service tree, Sorbus torminalis (L.) Crantz in spring and autumn followed by identifying similarities among the different study sites. Three different sites were selected including Kheiroud, Lalis, and Tarkin, in the Hyrcanian forests, north of Iran. Five rhizosphere soil samples were collected from each site, and the spores were extracted. Based on their morphological features, five species of AMF belonging to two families, i.e., Claroideoglomeraceae (two species) and Glomeraceae (three species) were identified. The species richness of the studied sites was identical with only the Kheiroud site presenting an additional species. Glomus badium was the most common AMF species in Kheiroud and Lalis in spring and autumn. However, the most common species in Tarkin was Septoglomus constrictum. The Shannon–Wiener indices of diversity and evenness and Simpson’s index of dominance (Ds) showed no significant differences among the studied sites in the two seasons. In sum, it is recommended that the colonized wild service tree seedlings be produced with the more relevant species identified in this study than with commercial sources.

The distribution, body size, and egg diameter and volume of ovigerous blue swimming crabs, Portunus pelagicus, were examined according to habitat type and egg color in Lasongko Bay, Central Buton, Indonesia between April 2013 and March 2014. Ovigerous female crabs were sampled using gillnets and traps at seven stations. Based on the results, the ovigerous female crabs with yellow to dark gray eggs were found over a range of depths from 0.35 to 31.0 m, on sandy to muddy substrate, and in sea bottom covered by seagrass and in bare areas. The carapace widths of the ovigerous female crabs varied significantly between the types of habitat, egg color, and season. Wet weight, diameter, and volume of eggs increased by 36.35%, 25.16%, and 91.76%, respectively, with embryonic development, while the dry weight of eggs decreased by 1.86%. Ovigerous blue swimming crabs with different levels of embryonic development showed a wide habitat distribution from shallow to deeper waters.

Plants or natural resources have been found to be a good alternative method for nanoparticles synthesis. In this study, polyaniline coated silver nanoparticles (AgNPs) synthesized from Piper betle leaves extract were investigated for their antibacterial activity. Silver nanoparticles were prepared from the reduction of silver nitrate and NaBH4 was used as reducing agent. Silver nanoparticles and extracts were mixed thoroughly and then coated by polyaniline. Prepared nanoparticles were characterized by Visual inspection, Ultraviolet-visible spectroscopy (UV), Fourier transform infrared Spectroscopy (FT-IR), Transmission Electron Microscopy (TEM) techniques. Antibacterial activities of the synthesized silver nanoparticles were tested against Staphylococcus aureus ATCC 25923, Salmonella typhi ATCC 14028, Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 27853. UV–Vis spectrum of reaction mixture showed strong absorption peak with centering at 400 nm. The FT-IR results imply that Ag-NPs were successfully synthesized and capped with bio-compounds present in P. betle. TEM image showed that Ag-NPs formed were well dispersed with a spherical structures and particle size ranging from 10 to 30 nm. The result revealed that Ag-Extract NPs showed 32.78±0.64 mm zone of inhibition against S. aureus, whereas norfloxacin (positive control) showed maximum 32.15±0.40 mm zone of inhibition for S. aureus. Again, maximum zone of inhibition 29.55±0.45 mm was found for S. typhi, 27.12±0.38 mm for E. coli and 21.95±0.45 mm for P. aeruginosa. The results obtained by this study can’t be directly extrapolated to human; so further studies should be undertaken to established the strong antimicrobial activity of Ag-Extract NPs for drug development program.

This study attempts to observe and record early embryonic developments of the orange mud crab, Scylla olivacea. The period taken by the eggs to hatch was 8 days and the colour of the eggs gradually changed from yellow to brown, gray and dark gray. During the embryonic development, the developing embryos reached the blastula stage within 24 hours with a mean egg diameter of 329.91 µm ± 6.62. The embryo developed into the gastrula stage on the 2nd day with a mean egg diameter of 337.10 µm ± 8.37. Eyes were consequently observed on the 3rd day and there was a further increase in the yolk-free portion with a mean egg diameter of 338.16 µm ± 6.57. On the 4th day, the eye-spot became crescent and there was a clearer tissue formation with a mean egg diameter of 358.45 µm ± 14.80. Meanwhile, on the 7th day prior hatching, there were many chromatophores present, mostly dark in colour and the yolk granules had further reduced in size. The heart beats faster than previous days before and the embryo occupied most of the available egg volume with a mean egg diameter of 377.26 µm ± 11.50.

Effects of four cooking methods (microwave cooking, grilling, steaming and shallow fat frying) and reheating by microwave on volatile profile in S. commerson were evaluated. Thirty compounds were identified in GC-MS analysis of raw samples. The number of volatile compounds had increased to 36, 46, 45 and 45 compounds in microwave cooked, grilled, steamed and shallow fat fried samples, respectively. Total concentrations of volatile had increased from 72.80 to 111.06, 74.25, 112.19 and 92.37 μg/kg, respectively. The concentration and new flavor compounds were increased by chill-reheating, due to the fast oxidation. The concentration of alcohol and aldehydes increased significantly (P<0.05). The hexanal amount also increased in all samples and indicated a marked development of warmed-over flavor. Quantitative and qualitative (P<0.05) differences were observed in volatile compounds between raw and cooked samples.

This paper describes the testing of Profiled Steel Sheet Dry Board (PSSDB) load bearing wall system. Experimental tests were conducted on various PSSDB wall samples, with and without infill materials to study its effect on the PSSDB load bearing wall performance. A proprietary profiled steel sheet, Ajiya Cliplock (0.48 mm thick) attached to Cemboard (10 mm thick) on one side, and Cemplank (10 mm thick) on the other side, via self drilling, self tapping screws spaced at 200 mm centre to centre were used for the tests. The height of the tested panels was all fixed at 3 metres. Results show that the ultimate loads at failure were between 28 kN to 45 kN, and between 158 kN to 182 kN for panels without and with infill materials respectively. Panels filled with polystyrene mortar show better axial load performance than panels without infill materials.