-
Scientists Wargamed Dimming the Sun and It Sparked a Dangerous Global Geoengineering Arms Race
https://www.bioscience.com.pk/en/subject/environmental-science/scientists-found-a-way-to-cool-earth-by-dimming-the-sun-but-a-new-simulation-exposes-a-much-bigger-problemdioxide into the stratosphere, forming reflective particles that successfully dimmed incoming sunlight and lowered global temperatures—in Pinatubo’s case, by roughly one degree Fahrenheit. Time series of climate-related responses – © The Journal...
-
Low-Cost Thermoforming Method Shapes Custom Plastics for Stem Cell Culture
https://www.bioscience.com.pk/en/subject/biotechnology/rapid-thermoforming-of-polycarbonate-cell-culture-accessories-from-3d-printed-moldsNew research shows that preheated polycarbonate sheets shaped over high-temperature 3D-printed molds can form transparent, sterilizable labware for growing human heart cells. Growing human heart cells in the laboratory usually requires custom plastic...
-
3D Printed Steaks Are Hitting Grocery Shelves And You Likely Won’t Be Able To Tell
https://www.bioscience.com.pk/en/subject/biology/the-next-steak-you-buy-at-the-grocery-store-might-come-from-a-3d-printer-and-you-may-never-know-itbehavior of biological tissues. Recent research has also highlighted that the physical environment of the printer—such as temperature and shear force—is just as important as the ingredients themselves. Even with an identical recipe, changing the...
-
Hidden Killer Making Coral Reefs Four Times More Likely To Die During Heatwaves
https://www.bioscience.com.pk/en/subject/marine-science/heat-and-disease-are-a-deadly-combo-for-coral-reefsrates of coral reefs, threatening the future of these vital marine ecosystems. Double Jeopardy: How Disease and Rising Temperatures Devastate Coral Reefs The survival of coral reefs is increasingly threatened by a synergistic effect between...
-
Scientists Discover How Cold Temperatures Could Slow Aging and Fight Neurodegenerative Disease
https://www.bioscience.com.pk/en/subject/genetics/study-could-help-explain-why-colder-body-temperature-extends-lifespan-in-many-speciesScientists have uncovered a molecular pathway in roundworms that explains how colder body temperatures may effectively extend lifespan across many species. For over a century, scientists have been fascinated by the observation that lowering ambient...
-
Estimation of Total Platelets Count by Manual Method
https://www.bioscience.com.pk/en/topics/microbiology/platelets-countthe reservoir a few times to mix the blood thoroughly with the diluent. Allow the mixture to stand for 10 minutes at room temperature, ensuring the cells settle before placing the sample into the hemacytometer. Clean the hemacytometer meticulously with...
-
PREPARATION OF BLOOD SMEAR (WEDGE METHOD)
https://www.bioscience.com.pk/en/topics/microbiology/preparation-of-blood-smear-by-wedge-method(400 ml). Prepared stain should be kept tightly stoppered in a brown bottle and stored in a cool, dark place at room temperature. Exposure to direct sunlight causes deterioration of the stain. After preparation, stain should be kept for 3-5 days before...
-
How to Count Reticulocytes (Manual Method)
https://www.bioscience.com.pk/en/topics/cell-biology/how-to-count-reticulocytesMix 2-3 drops of filtered new methylene blue dye with an equal volume of blood in a 12×75 mm test tube. Incubate at room temperature or 37°C for 15 minutes. Prepare a thin smear, air-dry, and examine under an oil-immersion microscope; reticulocytes...
-
Contamination of Laboratory Equipment with Bloodborne Pathogens
https://www.bioscience.com.pk/en/topics/pathology/contamination-of-laboratory-equipment-with-bloodborne-pathogensan important finding, especially considering HBV viability in dried blood has been demonstrated for up to 7 days at room temperature and HBV can be present in very high concentrations in clinical samples (up to 109 IU/mL). Although HBV was the most...
-
Energy Flow Through Ecosystems
https://www.bioscience.com.pk/en/topics/ecology/energy-flow-through-ecosystemsafter subtracting the fraction that plants use for respiration. Productivity in land ecosystems generally rises with temperature up to about 30°C, after which it declines, and is positively correlated with moisture. On land primary productivity thus is...
-
GELATINASE TEST (GELATIN LIQUEFACTION)
https://www.bioscience.com.pk/en/topics/microbiology/gelatinase-test-gelatin-liquefactionnot be inoculated and used as a control. Incubate both the test and control tubes simultaneously at the optimal growth temperature for the organism for 48 hours to 14 days. At the end of each 48-hour period, place both tubes (test bacterium and control)...
-
NITRATASE TEST (NITRATE REDUCTION; DENITRIFICATION)
https://www.bioscience.com.pk/en/topics/microbiology/nitratase-test-nitrate-reduction-denitrificationthe tube). Precautions -- If tubes are stored in the refrigerator, they should first be brought back up to the optimum temperature of the growth condition of the organism. -- When performing the nitrate reduction test using α-naphthylamine, the color...
-
PENICILLIN DISC TEST
https://www.bioscience.com.pk/en/topics/microbiology/penicillin-disc-testbut do not press disc down into the medium. Invert plate and incubate for 48 hours at your organism's optimum growth temperature. Interpretation Sensitive (S): A distinct zone of inhibition (5 to 30 mm) with a clear-cut margin around disc. Resistant...
-
Comparative Anatomy: Frog Reproductive System Vs. Fish Reproductive System
https://www.bioscience.com.pk/en/topics/zoology/comparison-frog-reproductive-system-fish-reproductive-systema type of marine cartilaginous fish, are also referred to as Scoliodon. They are poikilothermic, meaning their body temperature fluctuates with their environment. Frogs, on the other hand, are amphibious creatures and similarly classified as...
-
Contrail: Understanding the Basics
https://www.bioscience.com.pk/en/topics/chemistry/contrail-understanding-the-basicsthat form the visible streaks in the sky. The formation of contrails is dependent on several factors, including the temperature and humidity of the atmosphere, the altitude of the airplane, and the type of engine used. Generally, contrails are more...
-
Anatomy of the Spinal Cord
https://www.bioscience.com.pk/en/topics/orthopedics/anatomy-of-the-spinal-cordcord is responsible for relaying sensory information from the periphery to the brain. Sensory information includes touch, temperature, pressure, pain, and proprioception (awareness of body position). The dorsal columns of the spinal cord carry sensory...
-
Branches of Biology
https://www.bioscience.com.pk/en/topics/zoology/branches-of-biologymechanism, and life history of the cell is called cell biology. Cryobiology — It is the study of the effect of low temperature on living organisms. Chirology — It deals with a communication systems with the deaf and mute by sign languages. Chromatology...
-
Parasitic Adaptations in Helminths
https://www.bioscience.com.pk/en/topics/zoology/parasitic-adaptations-in-helminthseggs: The fertilized egg is covered by a thick resistant shell, which will protect the embryo from desiccation, and high temperature. Physiological adaptations The parasites will show certain physiological adaptations to lead parasitic life they are...
-
Hirudinaria Nervous System Sense Organs
https://www.bioscience.com.pk/en/topics/zoology/hirudinaria-nervous-system-sense-organssystem with specialized sense organs. These organs enable the leech to detect changes in its environment, including temperature, light, and vibrations, facilitating navigation and prey detection. The nervous system of Leech is annelidan but it shows...
-
Unlocking the Secrets of Palaemon Respiratory System: How Freshwater Shrimp Adapt to Thrive
https://www.bioscience.com.pk/en/topics/zoology/palaemon-respiratory-systemsystem is essential for their survival, especially in habitats where oxygen levels may fluctuate due to factors like temperature, water quality, and organic matter decomposition. Any disruption in the oxygen uptake process can have detrimental effects...