Screening of identification algorithm for rodent-induced bare patches based on the drone imagery.

Rodent-infested bald spots are crucial indicators of rodent infestation in grasslands. Leveraging Unmanned Aerial Vehicle (UAV) remote sensing technology for discerning detrimental bald spots among plateau pikas has significant implications for assessing associated ecological hazards. Based on UAV-visible light imagery, we classified and recognized the characteristics of plateau pika habitats with five supervised classification algorithms, minimum distance classification (MinD), maximum likelihood classification (ML), support vector machine classification (SVM), Mahalanobis distance classification (MD), and neural network classification (NN) .

A novel method for quantitative determination of multiple substances using Raman spectroscopy combined with CWT.

The identification of mixed solutions is a challenging and important subject in chemical analysis. In this paper, we propose a novel workflow that enables rapid qualitative and quantitative detection of mixed solutions. We use a methanol-ethanol mixed solution as an example to demonstrate the superiority of this workflow.

Cytokine storm and targeted therapy in hemophagocytic lymphohistiocytosis.

Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening systemic hyperinflammatory syndrome. The central pathogenesis is an explosive cytokine storm characterized by a significant increase in proinflammatory cytokines, including IL-1β, IL-6, IL-18, IFN-γ, and TNF-α. Meanwhile, negative regulatory factors, such as IL-10 and TGF-β, are also related to the production of HLH.

In situ antioxidation-assisted matrix solid-phase dispersion microextraction and discrimination of chiral flavonoids from citrus fruit via ion mobility quadrupole time-of-flight high-resolution mass spectrometry.

A simple and sensitive in situ antioxidation process assisted with a matrix solid-phase dispersion method for extracting chiral flavonoids in citrus fruit was established, and samples were further analyzed using ion mobility quadrupole time-of-flight high-resolution mass spectrometry. The collision cross-sections of the target compounds were studied using single-field and stepped-field methods. The optimal conditions were obtained using 30 mg of C as a dispersant, methanol as an elution solvent and 0.

[Quantitative apportionment of slope aspect and altitude to soil moisture and temperature and plant distribution on alpine meadow].

For understanding the effect of aspect and altitude of hill on soil moisture and temperature as well as the vegetation community, we selected an alpine meadow located on a hill in north-eastern Tibet Plateau as our study area. Data on soil moisture and temperature, as well as plant distribution pattern in this mountain ecosystem were collected. We used regression analysis, CCA ordination and variance decomposition, to determine the impacts of the key factors (aspect, altitude, soil temperature and moisture) on plant diversity distribution in 189 sample sites of the hill.

[Evaluation and selection of species diversity index under grazing disturbance in alpine mea-dow].

The research selected the plots of six grazing intensities in an alpine meadow in north-eastern Tibet Plateau in four years (2012-2015) and studied the relation between ten species diversity indexes, including two measured indexes (Richness and Abundance) in field and two indexes of each dominance, evenness, richness, integrated indexes, and grazing intensity as well as grazing time aiming at scientific selection of biodiversity index under grazing disturbance. The results indicated that the abundance was a better index than importance value to calculate biodiversity level because it was more sensitive to grazing disturbance. Dominance indexes, including Berger-Parker and Dominance, were not sensitive to grazing intensity and grazing time because they could not clarify the effect of grazing disturbance on dominant species in plant community.

[Relation between species distribution of plant community and soil factors under grazing in alpine meadow].

The research selected the alpine meadow located in the northeastern margin of the Qinghai-Tibet Plateau to study the changes of vegetation community and soil properties under different grazing intensities, as well as the quantitative relation between the distribution patterns of plant species and the physical and chemical properties of soil. The results showed that the grazing caused the differentiation of the initial vegetation community with the dominant plants, Elymus nutans and Stipa grandis. In the plots with high and low grazing intensities, the dominant plants had changed to Kobresia humilis and Melissitus ruthenica, and E.

[A comparative assessment of mechanical property between lingual and labial archwires using three-dimension finite element method].

Purpose: The purpose of this study was to investigate the mechanical property of lingual and labial archwires by using finite element method.

Methods: A three-dimensional finite element model including three maxillary left incisors of the 0.022-inch Dentaurum Discovery labial and Ormco 7th Generation lingual brackets was constructed and threaded with corresponding labial and lingual archwires.

[Effect of occlusion vertical rising on the expression of TGF-beta 1 in condylar cartilage of adolescent rats].

Objective: To determine the expression and localization of transforming growth factor (TGF)-beta1 in condylar cartilage of adolescent rats following occlusion vertical rising procedures.

Methods: Forty male rats of 5 weeks of age were randomly divided into the experiment group (n=20) and the control group (n=20). The rats in the experiment group were fitted with upper posterior bite rising splints on their upper molar.

[3-D finite element study on rapid maxillary expansion using implant anchorage].

Objective: To evaluate the biomechanic changes of craniofacial complex with rapid maxillary expansion using implant anchorage.

Methods: Rapid maxillary expansion using implant anchorage was simulated with MSC. Marc.

[Clinical experience of orthodontic treatment on 36 cases with congenital lower incisor missing].

Objective: To explore the treatment plan in patients with congenital lower incisor missing.

Methods: Thirty-six patients with congenital lower incisor missing were included in the investigation. The missing location, missing quantity, malocclusion type and treatment method were analyzed.

[Clinic study of root resorption caused by edgewise appliance combined with flat bite plate treatment ].

Objective: To study the root resorption caused by edgewise appliance combined with flat bite plate treatment.

Methods: 65 patients with edgewise technique and flat bite plate treatment were chosen. All patients were taken panoramic radiograph before flat bite plate treatment, immediately after flat bite plate treatment and 6 months after flat bite plate treatment.

[A survey of the therapeutic reason of orthodontic patients in Luzhou].

Objective: To investigate the therapeutic reason of orthodontic patients in Luzhou.

Methods: A questionnaire investigation was made for the following randomly chosen people: 452 teenage patients from orthodontic department of stomatology hospital affiliated to Luzhou Medical College were brought into treatment group. 600 students from Luzhou No.