The heart pumps blood through the body, with systole and diastole being the two phases of its movement. End-systolic volume is the blood left in the heart after a contraction. Measuring these values helps identify and treat heart problems. The human heart is an involuntarily contracting muscle responsible for distributing blood throughout the body. The […]
During pregnancy, a woman’s blood volume increases by 50%, mainly in the second trimester, to meet the needs of the uterus and fetus. Multiple fetuses increase blood volume by 5%, and there is a risk of congestive heart failure. Delicate tissues may be more prone to damage and bleeding. During pregnancy, a woman’s blood volume […]
German Volume Training is a weight training program that involves ten sets of ten repetitions of a particular exercise, done at approximately half of the athlete’s maximum lifting capacity. It is an effective way to add muscle mass quickly, but should be done with the guidance of a professional trainer and with sufficient rest between […]
Volume licensing is the activation of software on many computers in the same domain or location, commonly used in business, education, and government. It saves time and money by using a single serial number, eliminates physical copies, and lowers the price per software seat. However, unauthorized use can result in software piracy, so organizations carefully […]
Factors affecting semen volume include drug and cigarette use, physical activities, and emotional stress. Sperm count can be tested at home or at a doctor’s office. The World Health Organization defines a healthy sperm count as 20-40 million per milliliter of semen. Medications, physical activities, and health/genetic factors can reduce sperm volume. Emotional stress may […]
Doctors use various techniques, such as ultrasound and cardiac catheterization, to measure stroke volume, which is the amount of blood pumped by the heart with each beat. Normal range is 60-130 milliliters per beat, and a low volume may indicate complications. Doctors can use several techniques to measure stroke volume, which is the amount of […]
Variable air volume (VAV) is a heating and cooling strategy that adjusts the amount of air pumped into a space based on temperature and energy requirements. Systems range from simple on/off to sophisticated software-controlled options, with some allowing for efficient airflow to specific areas. Variable air volume, or VAV, is a type of heating and […]
Volume meters measure the total amount of fluid or gas passing through a system, not flow rates or pressures. They are used for billing or process measurement and come in various types, including diaphragm, rotary, turbine, compound, and multi-jet. Water volume meters are either displacement or velocity meters, with variants such as oscillating piston, nutting […]
Specific volume is the amount of volume occupied by a certain mass of gas, which varies with pressure and temperature. It is reciprocal to density and expressed as v = Volume/Mass. Units include cubic meters per kilogram and cubic inches or foot-pounds. Specific volume is a term, usually applied to gases, which indicates the amount […]
Constant air volume (CAV) provides a constant level of airflow at two temperatures and maintains standard air pressure. It requires two sets of ductwork, but is easy to maintain and best for large open spaces. Variable air volume (VAV) is more complex, energy efficient, and suitable for smaller rooms. Constant air volume (CAV) is a […]
Absolute volume measures the amount of space one unit of an object occupies, while density measures how tightly packed the material is. Liquids expand to fill containers, so their absolute volume is calculated based on a single unit. Loudness and absolute loudness are important in science and engineering. A solid’s volume can be measured by […]
Ventilation volume is the amount of air moved through the lungs in a minute, varying depending on activity and health. Gas exchange occurs in the lungs, exchanging waste for oxygen. Ventilation volume affects the body’s oxygen supply, and can be measured through spirometry. Healthcare professionals adjust ventilation volume for patients who cannot breathe on their […]
“Volume removed” note appears on the consolidated tape during heavy trading periods, indicating that some data may be omitted to catch up. This can put traders at risk of making decisions based on out-of-date information. The note means only stock symbols and prices will be displayed, with volume information for small volume trades removed. The […]
A primary school teacher from Belfast holds the Guinness World Record for the loudest human voice, reaching 121.7 decibels. The loudest sound on earth was an exploding Saturn V rocket at 204 decibels, while the Krakatoa volcanic explosion in 1883 was the loudest accurately measured human sound. There are a number of deafening sounds on […]
Trading volume measures the number of shares or contracts of a security traded during a defined period of time. Increases in volume can indicate significant changes in price, such as earnings reports or important news. Institutional investors may also cause spikes in volume. Trading volume is a useful tool for technical analysis. Trading volume, sometimes […]
Low semen volume can be caused by hormonal problems, frequent sexual activity, nutritional deficiencies, testicular injury, tight clothing, heat, or infection. Low testosterone levels are a common cause and can be corrected with hormone replacement therapy. Any concerns should be discussed with a doctor. Low semen volume is a relatively common problem for men of […]
Manufacturing companies create budgets projecting production volume and financial expectations, but actual production may vary due to factors such as delays and machinery breakdowns. The difference between projected and actual production creates a variance, which can be positive or negative. Managers and other supervisors in manufacturing plants often create budgets that project the company’s overall […]
During periods of heavy trading, the consolidated tape may display a “deleted volume” note, indicating that some data may be omitted to allow the tape to recover. This can put traders at risk of making decisions based on outdated information. Volume information may be omitted for small volume trades, and depending on who runs the […]
