International operations and corporate R&D investment: Evidence from China.

This paper presents an examination of the relationship between international operations and corporate R&D investment. Using a large sample of Chinese listed firms for the 2009-2022 period and the ordinary least squares method, we find that international operations have a positive effect on corporate R&D investment. The finding remains valid after a battery of robustness tests.

Effects of Bushen Tianjing Recipe in a rat model of tripterygium glycoside-induced premature ovarian failure.

Background: Bushen Tianjing Recipe (BTR) is a traditional Chinese herbal medicine that has been prescribed for premature ovarian failure (POF) for decades in China. Nevertheless, little is known regarding its underlying molecular mechanism. In the present study, we investigated the effects of BTR in a tripterygium glycoside (TG)-induced-POF rat model.

Evaluation of breviscapine on prevention of experimentally induced abdominal adhesions in rats.

Background: Adhesion formation, which results from mechanical peritoneal damage, tissue ischemia, or the presence of foreign materials, is a complicated process. The formation of adhesions is associated with inflammatory response and extracellular matrix deposition in response to injury. Although the pathophysiology of adhesion formation is widely understood, an absolute solution to this problem does not exist yet.

Profiling of fatty acids composition in suet oil based on GC-EI-qMS and chemometrics analysis.

Fatty acid (FA) composition of suet oil (SO) was measured by precolumn methylesterification (PME) optimized using a Box-Behnken design (BBD) and gas chromatography/electron ionization-quadrupole mass spectrometry (GC-EI-qMS). A spectral library (NIST 08) and standard compounds were used to identify FAs in SO representing 90.89% of the total peak area.

Multielemental composition of suet oil based on quantification by ultrawave/ICP-MS coupled with chemometric analysis.

Suet oil (SO) has been used commonly for food and medicine preparation. The determination of its elemental composition has became an important challenge for human safety and health owing to its possible contents of heavy metals or other elements. In this study, ultrawave single reaction chamber microwave digestion (Ultrawave) and inductively coupled plasma-mass spectrometry (ICP-MS) analysis was performed to determine 14 elements (Pb, As, Hg, Cd, Fe, Cu, Mn, Ti, Ni, V, Sr, Na, Ka and Ca) in SO samples.