Effects of Different Seedling Raising Methods on Seedling Growth of Two Kinds of Fritillaria

[Objectives] To reveal the effects of film mulching and open ground seedling raising on the differences between Fritillaria przewalskii Maxim. and Fritillaria pallidiflora Schrenkf., find the optimal seedling raising method, and provide scientific basis for standard seedling raising technique and protecting wild resources of Fritillaria. [Methods] This experiment counted the seedling emergence number and calculated the seedling emergence indicator and the yield. [Results] The results showed that under the condition of film mulching and open ground seedling raising, the changes of Fritillaria seedlings showed an "S" curve, conforming to the Logistic equation, and the rapid growth period appeared 5-13 d after seedling emergence. Compared with the open ground seedling raising, the seedlings of F. przewalskii Maxim. and F. pallidiflora Schrenkf. raised through film mulching emerged 2-4 d earlier, and the yield increased by 56.8% and 21.71%, respectively, and the individual quality was excellent. [Conclusions] The film mulching of F. przewalskii Maxim. and F. pallidiflora Schrenkf. has great significance to protect the wild resources of Fritillaria in Eryin Mountain Area. It is recommended to adopt the film mulching method for Fritillaria seedling raising, to reduce the yield decline due to lodging, and adopt sun-shading net covering after sowing.

Development of a high-power blue diode laser for precision vaporization of prostate tissue for the surgical management of benign prostatic hyperplasia

This paper explores the advancement and application of high-power blue diode lasers in treating benign prostatic hyperplasia(BPH).Addressing the challenges posed by existing techniques,the study focuses on optimizing tissue removal methods.Energy platform for BPH should balance a range of factors,such as operative time,patient conditions,urinary functions,complications,durability,accessibility,and cost,all while prioritizing patient care.Blueray Medical's innovation of high-power blue diode laser systems for BPH surgery is explored,with emphasis on achieving a balance among these considerations.By illustrating the biomedical effects of lasers and their interaction with soft tissues,particularly emphasizing the role of photon absorption by biomolecules and proteins in tissue behavior,this study outlines the advantages of the highpower blue diode laser system.The initial laboratory experiments and clinical results consistently align with our theoretical predictions,especially in terms of tissue vaporization efficiency,tissue coagulation,and bleeding control.In conclusion,blue diode lasers hold potential to enhance surgical outcomes for BPH.Their unique properties offer benefits like improved tissue removal rate and reduced thermal damages.Integrating blue laser technology into BPH protocols could lead to shorter hospital stays,cost savings,and expanded patient eligibility,although rigorous clinical studies are needed to fully understand their benefits and limitations.

Mapping the topography and cone morphology of the Dalinor volcanic swarm in Inner Mongolia with remote sensing and DEM Data

The Dalinor volcanic swarm, located south of Xilinhot, Inner Mongolia of China, was a result of multistage eruptions that occurred since the Neogene period. This swarm is mainly composed of volcanic cones and lava tablelands. The objective of this study is to map the topography and morphology of this volcanic swarm. It is based on a variety of data collected from various sources, such as the digital elevation model （DEM）, Landsat images, and a 1：50,000 topographic map, in addition to various software platforms, including ArcGIS, Envi4.8, Global Mapper, and Google Earth for data processing and interpretation. The results show that the overall topography of the volcanic swarm is a platform with a central swell having great undulation, sizable gradient variations, a rough surface, and small terrain relief. According to the undulating characteristics of the line profile, the volcanic swarm can be divided into four stairs with heights of 1,280 m, 1,360 m, 1,440 m, and 1,500 m. The analysis of the swath profile characterizes the two clusters of volcanoes with different height ranges and evolution. The lava tablelands and volcanic cones are distributed in nearly EW-trending belts, where tableland coverage was delineated with superposed layers of gradients and degrees of relief. According to the morphology, the volcanic cones were classified into four types： conical, composite, dome, and shield. The formation causes and classification basis for each type of volcanic cone were analyzed and their parameters were extracted. The HID ratios of all types of volcanic cones were then statistically determined and projected to create a map of volcanic density distribution. Based on the relationship between distribution and time sequence of the formation of different volcanic cones, itcan be inferred that the volcanic eruptions migrated from the margins to the center of the lava plateau. The central area was formed through superposition of multi-stage eruptive materials. In addition, a large number of early shield volcanoes were distributed on the margins. The morphological analysis of volcanic cones reveals the evolutionary stages of different types of cones. From the interpreted geomorphological indicators of faults, such as surface scarps, the pattern of volcanic cones, and the arrangement of crater major axes, it can be inferred that NE-trending and nearly EW-trending faults are present in this area, which are closely related to the formation and distribution of the volcanoes.

Dietary dihydroartemisinin supplementation alleviates intestinal inflammatory injury through TLR4/NOD/NF-kB signaling pathway in weaned piglets with intrauterine growth retardation

The aim of present study was to evaluate whether diets supplemented with dihydroartemisinin(DHA)could alleviate intestinal inflammatory injury in weaned piglets with intrauterine growth retardation(IUGR).Twelve normal birth weight(NBW)piglets and 12 piglets with IUGR were fed a basal diet(NBW-CON and IUCR-CON groups),and another 12 piglets with IUGR were fed the basal diet supplemented with DHA at 80 mg/kg(IUGR-DHA group)from 21 to 49 d of age.At 49 d of age,8 piglets with similar body weight in each group were sacrificed.The jejunal and ileal samples were collected for further analysis.The results showed that IUGR impaired intestinal morphology,increased intestinal inflamma-tory response,raised enterocyte apoptosis and reduced enterocyte proliferation and activated trans-membrane toll-like receptor 4(TLR4)/nucleotide-binding and oligomerization domain(NOD)/nuclear factor-kB(NF-kB)signaling pathway.Dihydroartemisinin inclusion ameliorated intestinal morphology,indicated by increased villus height,villus height-to-crypt depth ratio,villus surface area and decreased villus width of piglets with IUGR(P<0.05).Compared with NBW piglets,IUGR piglets supplemented with DHA exhibited higher apoptosis index and caspase-3 expression,and lower proliferation index and proliferating cell nuclear antigen expression in the intestine(P<0.05).Dihydroartemisinin supple-mentation attenuated the intestinal inflammation of piglets with IUGR,indicated by increased concen-trations of intestinal inflammatory cytokines and lipopolysaccharides(P<0.05).In addition,DHA supplementation down-regulated the related mRNA expressions of TLR4/NOD/NF-kB signaling pathway and upregulated mRNA expressions of negative regulators of TLR4 and NOD signaling pathway in the intestine of piglets with IUGR(P<0.05).Piglets in the IUGR-DHA group showed lower protein ex-pressions of TLR4,phosphorylated NF-kB(pNF-kB)inhibitorα,nuclear pNF-kB,and higher protein expression of cytoplasmic pNF-kB in the intestine than those in the IUGR-CON group(P<0.05).In conclusion,DHA supplementation could improve intestinal morphology,regulate enterocyte prolifera-tion and apoptosis,and alleviate intestinal inflammation through TLR4/NOD/NF-kB signaling pathway in weaned piglets with IUGR.