Effectiveness of preconception weight loss interventions on fertility in women: a systematic review and meta-analysis.

Importance: Weight loss before conception is recommended for women with overweight or obesity to improve fertility outcomes, but evidence supporting this recommendation is mixed.

Objective: To examine the effectiveness of weight loss interventions using lifestyle modification and/or medication in women with overweight or obesity on pregnancy, live birth, and miscarriage.

Data Sources: An electronic search of MEDLINE, Embase, Cochrane Library, including Cochrane Database of Systematic Reviews and Cochrane Central Register of Controlled Trials, and Cumulative Index to Nursing and Allied Health Literature was conducted through July 6, 2022, via Wiley.

Casein interference in bovine plasmin assays using a synthetic substrate.

Bovine plasmin (EC 3.4.21.

Milk clotting activity in bovine fetal abomasa.

Abomasa (vells) were removed from 30 fetal calves at each of the 6th, 7th, 8th, and 9th mo of development. Milk clotting enzymes were exhaustively extracted in 10% NaCl solutions from the dried abomasal tissue. Total enzyme activity at each stage of fetal development was compared with that from abomasa of 3 to 5-day-old milk-fed calves.

Effects of pH, calcium chloride, and chymosin concentration on coagulation properties of abnormal and normal milk.

Individual Holstein cow milk samples were selected for good and poor chymosin-coagulation characteristics. The effect of pH adjustment, addition of .02% calcium chloride, and variation in chymosin concentration on coagulation properties of good and poor coagulating samples was evaluated.

A Rapid Psychrometric Procedure for Water Activity Measurement of Foods in the Intermediate Moisture Range .

Commercial vapor pressure thermocouple psychrometers (hygrometers) are now generally accepted for measuring water activity, a (water potential) in plants and soils, and commercial instruments are available. We have adapted them for a measurements in the 0.99 to 0.