Helium scarcity and rising costs have driven labs to explore hydrogen as a carrier gas for GC-MS, promising faster analysis and cost efficiency. However, analysts often encounter sensitivity and ...

Cluster analysis involves the problem of optimal partitioning of a given set of entities into a pre-assigned number of mutually exclusive and exhaustive clusters. Here the problem is formulated in two ...

Journal of Agricultural, Biological, and Environmental Statistics, Vol. 4, No. 3 (Sep., 1999), pp. 310-325 (16 pages) Yields from a series of variety trials within a region may show heterogeneous ...

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development. Michael Boyle ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Breaking stock news is now free. Create your account to stay informed—and explore the insights behind every move. Charter Communications, Inc. ( NASDAQ: CHTR) Bank of America 2025 Media, ...

Around 10 percent of Japanese elementary and junior high school students have suffered health problems due to fragranced products such as laundry soap and perfumes, according to a current survey. The ...

Objective Physical activity (PA) is associated with a decreased incidence of dementia, but much of the evidence comes from short follow-ups prone to reverse causation. This meta-analysis investigates ...

Accurate measurement of time-varying systematic risk exposures is essential for robust financial risk management.

Objective: To compile and critique research on the diagnostic accuracy of individual orthopaedic physical examination tests in a manner that would allow clinicians to judge whether these tests are ...