Suchergebnisse

China is abundant in organic residues from agricultural and forestry efforts. Bulbus Fritillaria cirrhosa D. Don (BFC) is a precious wild herb of Liliaceae that grows in the Tibetan area of China and the bulbs are used as a source of medicine. The shortage of germplasm resources restricts the development of traditional Chinese medicinal materials, so improved cultivation methods are urgently needed. The objective of this study was to study the effects of different substrates on the growth of F. cirrhosa seedlings. Sawdust and vermi-compost are common organic residues and were selected as nursery materials to supplement efforts to cultivate Fritillaria cirrhosa D. Don from ripe seeds and bulbs. The experiments were conducted in a plastic greenhouse in Ya'an of Sichuan Province from January to May 2013. Vegetative parameters of leaf length, leaf width, seedling fresh weight, seedling dry weight, and bulb size and fresh weight were measured. Additionally, the emergence ratio and preservation rate were calculated. The following results were obtained: (1) Sowing seeds of F. cirrhosa with 70% vermi-compost and 30% sawdust gave the best emergence rate, leaf length (60 days after seedling emergence, 60 DAS), and bulb dry weight (at harvest, 93 DAS). (2) The leaf nitrogen content (60 DAS) was positively correlated with the nitrogen content of bulbs (at harvest, 93 DAS). From the data, we concluded that forestry residues such as sawdust and vermi-compost can serve as excellent growing substrates of BFC seedlings.

Through the evolution of Singapore's elementary school Chinese textbooks, we can find that Singapore's Chinese language textbooks are student-centered, ability-oriented, and tailored to the needs of the students. And its Chinese language education philosophy has a composite orientation and tries to explore a rational balance between Western civilization and Chinese culture based on maintaining the Chinese heritage.

Alien species may adversely affect not only human health, agriculture, and fisheries but also the native ecosystem. Pomacea canaliculata is one of alien harmful species (IUCN). Forest residues are a kind of renewable, cheap and secure source of primary energy. Nandina domestica Thunb. is a commonly and widely cultivated plant for city landscape construction in China. After being pruned, a large of N. domestica leaves are usually abandoned. In this work, extracts of ethanol Soxhlet (SE), ethanol immerse (EE), and water immerse (WE) were obtained from leaves of N. domestica Thunb. cv. Firepower. The molluscicidal effects of the three extracts from the leaves were evaluated against black P. canaliculata. In sand pot culture condition and pot culture with paddy soil condition, SE at concentration of 4000 mg L-1 did not affect seedlings normal growth. Plant height, seedling fresh weight (SFW), seedling dry weight (SDW) and Chlorophyll content of SE (4000 mg L-1) were not significantly different from that in DS (distilled water + seedlings). Besides, in pot culture with paddy soil condition, the SE treatment at concentration of 4000 mg L-1 inhibited P. canaliculata chewing rice seedlings effectively, which was not statistically different from the positive control {NSP, niclosamide (according to field dosage, 0.086 g m-2 ) + seedlings + P. canaliculata)}. Results from this study indicated that SE has molluscicidal effect against P. canaliculata and SE did not affect the normal growth of rice seedlings. Thus, we suggest further chemical and toxicological studies of SE.

Abstract
Background We investigate the pain relief and safety of microwave ablation (MWA) combined with percutaneous vertebroplasty (PVP) in the treatment of metastatic vertebral tumors.
Methods This prospective pilot study enrolled patients with metastatic vertebral tumors treated between January 2018 and October 2019. The participants were randomized to the PVP and MWA + PVP groups. Clinical parameters, pain visual analog scale (VAS), analgesic use scores (AUS), and quality-of-life score (QLS) were compared between groups.
Results Sixty-seven participants were enrolled (PVP: n = 35; MWA + PVP: n = 32). There were no differences in bone cement injection volume, extravasation, and X-ray exposure time between the two groups (p > 0.05), but treatment costs were higher for the MWA + PVP group (26,418 ± 194 vs. 15,606 ± 148 yuan; p < 0.05). There were no significant improvements in VAS from baseline to 24 hours, 72 hours, 7 days, 1 month, and 3 months in the two groups (p > 0.05); at 6 and 12 months after the operation, the improvement from baseline was significant in the two groups (p < 0.05). The VAS was lower at 6 months (2.7 ± 0.7 vs. 3.2 ± 0.7) and 12 months (3.5 ± 0.8 vs. 4.0 ± 0.7) in the MWA + PVP group (both p < 0.01 vs. PVP). The AUS and QLS were improved with PVP at 6 and 12 months (p < 0.05) and with MWA + PVP at 12 months (p < 0.05). The AUS was lower at 6 and 12 months in the MWA + PVP group (p < 0.05 vs. PVP).
Conclusion MWA combined with PVP might be a safe and effective palliative treatment for pain from metastatic vertebral tumors.