Long-term nitrogen addition facilitates phosphorus uptake by the roots of .

We conducted a field nitrogen addition experiment in a subtropical natural forest taking ammonium nitrate as nitrogen source. There were three nitrogen addition levels: 0, 20, and 80 kg N·hm·a, corresponding to the control, low nitrogen, and high nitrogen treatments, respectively. In the ninth year of treatments, we collected samples of surface soil from 0 to 15 cm to determine soil basic chemical properties, microbial community composition, acid phosphatase activity, and analyzed leaf nitrogen and phosphorus contents, leaf phosphorus fractions, and fine root biomass and phosphorus content in .

Perioperative dexmedetomidine effects on delirium in elderly patients after noncardiac surgery: A retrospective propensity score analysis.

Background: Delirium is a complex syndrome with limited pharmacological treatment options, whereas non-pharmacological prevention strategies warrant further investigation. Dexmedetomidine, an α2-adrenergic receptor agonist commonly used for sedation and analgesia, has shown potential anti-inflammatory effects that may contribute to delirium prevention. We conducted a retrospective PSM analysis to evaluate the effectiveness of dexmedetomidine in preventing postoperative delirium in elderly ICU patients undergoing noncardiac surgery.

[Short-term nitrogen addition reduces soil microbial nitrogen fixation rate in subtropical and forests].

Biological nitrogen (N) fixation is an important source of N in terrestrial ecosystems, but the response of soil microbial N fixation rate to N deposition in different forest ecosystems still remains uncertain. We conducted a field N addition experiment to simulate atmosphere N deposition in subtropical and forests. We set up three levels of nitrogen addition using urea as the N source: 0 (control), 40 (low N), and 80 g N·hm·a(high N) to examine the chemical properties, microbial biomass C, enzyme activities, and gene copies of top soils (0-10 cm).

[A case-control study of minimally invasive transforaminal interbody fusion with the assistance of robot and traditional fluoroscopy in the treatment of single-space lumbar disc herniation].

Objective: To compare the safety and nail placement accuracy of fluoroscopy-assisted and robot-assisted minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) in the treatment of single-space lumbar disc herniation.

Methods: The clinical data of 52 patients with single-space lumbar disc herniation treated by MIS-TLIF from March 2019 to February 2020 were retrospectively analyzed. Among them, 24 patients were treated by robot-assisted MIS-TLIF(group A) and 28 patients were treated by fluoroscopy-assisted MIS-TLIF (group B).

Knowledge of Oral Cancer Amongst Dental Patients Attending Public Clinics in South East Queensland, Australia.

Patient knowledge of risk factors, signs and symptoms associated with oral cancers is crucial for increasing the likelihood of patient presentation for opportunistic screening and reducing delay in patient appraisal for early detection. This study aimed to assess the knowledge of oral cancer and to ascertain socio-demographic factors that influence knowledge amongst adult dental patients attending public clinics in Brisbane, Australia. A convenience sample of 213 adult dental patients who attended the Herston and Stafford public health clinics in Brisbane, Australia, between July and August 2019 participated in the self-administered questionnaire.