Area-wide survey and monitoring of insecticide resistance in the brown planthopper, Nilaparvata lugens (Stål), from 2020 to 2023 in China.

The brown planthopper (BPH), Nilaparvata lugens (Stål), is a notorious pest affecting Asian rice crops. The evolution of insecticide resistance in BPH has emerged as a significant challenge in effectively managing this pest. This study revealed the resistance status of BPH to nine insecticides in ten provinces and Shanghai City in China from 2020 to 2023.

Inheritance of chlorantraniliprole resistance and fitness costs in a field population of Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) in China.

Background: Cnaphalocrocis medinalis is one of the major rice insect pests in Asia. Chlorantraniliprole is one of the most important insecticides for the control of C. medinalis.

The G932C mutation of chitin synthase 1 gene (CHS1) mediates buprofezin resistance as confirmed by CRISPR/Cas9-mediated knock-in approach in the brown planthopper, Nilaparvata lugens.

The brown planthopper (Nilaparvata lugens) is a major destructive rice pest in Asia. High levels of insecticide resistance have been frequently reported, and the G932C mutation in the chitin synthase 1 (CHS1) gene has been found to mediate buprofezin resistance. However, there has been no direct evidence to confirm the functional significance of the single G932C substitution mutation leading to buprofezin resistance in N.

Seasonal variations of macrozoobenthic community trophic structure in the waters adjacent to the seaweed beds of Dalian Island in the North Yellow Sea.

To investigate the effects of algal detritus export on the trophic structure of macrozoobenthic community in the adjacent benthic habitat during the bloom and decline of macroalgae, we collected macrozoobenthos from the adjacent sea area of Dalian Island in the North Yellow Sea in May (the algal bloom period) and August (the algal decay period) of 2020. We quantifyied the seasonal changes in the trophic structure of macrozoobenthic community by using carbon and nitrogen stable isotope techniques. Results showed that δC and δN values of macrozoo-benthos in May ranged from -23.

Resistance Monitoring of to Pymetrozine Based on Reproductive Behavior.

On the basis of the inhibition effects of pymetrozine on the reproductive behavior of we established a bioassay method to accurately evaluate the toxicity of pymetrozine in and clarified the level of pymetrozine resistance of in the field. In this study, pymetrozine's effects on the fecundity of were evaluated using the topical application method and rice-seedling-dipping method. Moreover, the resistance of to pymetrozine in a pymetrozine-resistant strain (Pym-R) and two field populations (YZ21 and QS21) was determined using the rice-seedling-dipping method and fecundity assay methods.

CRISPR/Cas9-mediated knockout of NlCYP6CS1 gene reveals its role in detoxification of insecticides in Nilaparvata lugens (Hemiptera: Delphacidae).

Background: The brown planthopper (Nilaparvata lugens) is one of the major rice insect pests in Asia. Recently, high levels of insecticide resistance have been frequently reported and cytochrome P450 monooxygenase (P450)-mediated metabolic detoxification is a common resistance mechanism in N. lugens.

Effects of nicotinic acetylcholine receptor subunit deletion mutants on insecticide susceptibility and fitness in Drosophila melanogaster.

Background: Nicotinic acetylcholine receptors (nAChRs) are major excitatory neurotransmitter receptors in insects and also the target site for many insecticides. Unfortunately, the effectiveness of these insecticides is diminishing as a consequence of the evolution of insecticide resistance. Further exploration of insecticide targets is important to sustainable pest management.

Factors influencing knee valgus alignment in Crowe type IV hip dysplasia after total hip arthroplasty.

Background: Valgus deformity of the knee remains a complaint after total hip arthroplasty (THA) among some patients with Crowe type IV hip dysplasia. We aimed to identify the knee alignment in these patients before and after surgery, and to explore the factors contributing to postoperative knee valgus alignment.

Materials And Methods: We retrospectively reviewed a series of Crowe type IV patients who received THA between February 2010 and May 2019 in our hospital.

Overexpression of ATP-binding cassette transporter Mdr49-like confers resistance to imidacloprid in the field populations of brown planthopper, Nilaparvata lugens.

Background: The brown planthopper (BPH), Nilaparvata lugens (Stål), is the most severe pest attacking rice crops using sucking mouthparts. It causes significant damages to rice growth and food production worldwide. With the long-term and wide use of insecticides, field populations of BPH have developed resistance to many insecticides.

Jumbo cup in hip joint renovation may cause the center of rotation to increase.

Background: Utilizing the large jumbo cup in revision total hip arthroplasty is an effective approach to cure many lacunar and segmental peripheral bone defects. However, with the use of the jumbo cup, the center of the hip joint may become elevated relative to the primary acetabulum, and the diameter of the large cup is greater.

Aim: To study the height and the significance of the elevation of the hip joint center.

Ground-state phase and superfluidity of tunable spin-orbit-coupled Bose-Einstein condensates.

We theoretically study the ground-state phases and superfluidity of tunable spin-orbit-coupled Bose-Einstein condensates (BECs) under the periodic driving of Raman coupling. An effective time-independent Floquet Hamiltonian is proposed by using a high-frequency approximation, and we find single-particle dispersion, spin-orbit-coupling, and asymmetrical nonlinear two-body interaction can be modulated effectively by the periodic driving. The critical Raman coupling characterizing the phase transition and relevant physical quantities in three different phases (the stripe phase, plane-wave phase, and zero momentum phase) are obtained analytically.

Pymetrozine inhibits reproductive behavior of brown planthopper Nilaparvata lugens and fruit fly Drosophila melanogaster.

Pymetrozine is a promising chemical used to control brown planthopper, which developed resistance to imidacloprid and buprofezin in the past decade. Field efficacy indicates that pymetrozine can reduce the number of offsprings of brown planthopper, but the specific physiological mechanism is unknown. In this study, we systematically described the mating process of brown planthopper including 8 steps (abdominal vibration, following, positioning, wing extension, attempted copulation, copulation, terminated copulation and leaving) and explored the optimal mating time after adult eclosion (3-5 days) and observation time (30 mins).

[A preliminary study of three-dimensional printed porous titanium plate integrated implant for the repair of comminuted acetabular posterior wall fracture with bone defect].

Objective: To explore the feasibility of using computer-aided design(CAD) combined with 3D printing technology to repair and reconstruct the comminuted fracture of the posterior wall of acetabulum with osteochondral defect, to evaluate the biomechanical properties of composite titanium nitride bioceramic coatings with porous titanium alloy scaffolds and steel plate integrated implants.

Methods: Based on CT images of continuous tomography, the computer-aided design software was used to construct a digital model of porous titanium alloy plate implant with a specially open cellular three-dimensional structure, and the three-dimensional implant was prepared with Ti6Vl4V powder by using the 3D printing technology, following by titanium nitride coating on its articular surface. The degree of matching and attachment between the implant and acetabulum were observed; Ansys software was used for finite element modeling to analyze the stress distribution, stress conduction and deformation displacement of the acetabulum of the normal group, the traditional group and the implant group under the same load state, and to verify the biomechanical properties of the implant.

[Nonlinear Regression Methods of Ethanol Raman Spectra Quantitative Analysis].

Ethanol concentration quantitative analysis of ethanol-water solution can be realized by measuring the ratio of Raman characteristic peak heights. The content of ethanol can be determined by linear relation between relative intensity ratio and ethanol concentration. However, this analytical method only applies to the ethanol solution at low concentration.

Multicenter study on adult growth hormone level in postoperative pituitary tumor patients.

The objective of this study is to observe the adult growth hormone level in postoperative pituitary tumor patients of multi-centers, and explore the change of hypophyseal hormones in postoperative pituitary tumor patients. Sixty patients with pituitary tumor admitted during March, 2011-March, 2012 were selected. Postoperative hypophyseal hormone deficiency and the change of preoperative, intraoperative, and postoperative growth hormone levels were recorded.

Dynamic assessment of the changing geometry of the mitral apparatus in 3D could stratify abnormalities in functional mitral regurgitation and potentially guide therapy.

Introduction: In functional mitral regurgitation (FMR), effective regurgitant orifice area (EROA) displays a dynamic pattern. The impact of dynamic changes of annulus dysfunction and leaflets tenting on phasic EROA was explored with real-time three-dimensional transesophageal echocardiography (RT3D-TEE).

Methods: RT3D-TEE was performed in 52 FMR patients and 30 controls.

Quantitative analysis of mitral valve morphology in mitral valve prolapse with real-time 3-dimensional echocardiography: importance of annular saddle shape in the pathogenesis of mitral regurgitation.

Background: Few data exist on the relation of the 3-dimensional morphology of mitral valve and degree of mitral regurgitation (MR) in mitral valve prolapse.

Methods And Results: Real-time 3-dimensional transesophageal echocardiography of the mitral valve was acquired in 112 subjects, including 36 patients with mitral valve prolapse and significant MR (≥3+; MR+ group), 32 patients with mitral valve prolapse but no or mild MR (≤2+; MR- group), 12 patients with significant MR resulting from nonprolapse pathologies (nonprolapse group), and 32 control subjects. The 3-dimensional geometry of mitral valve apparatus was measured with dedicated quantification software.

[Mixed logit model and its application in insurance choices of the new rural cooperative medical system].

Objective: To apply mixed logit model for analyzing the data of new rural cooperative medical with suitability and identify the factors affecting the residents choices of insurance mode.

Methods: Hypothesis test of IIA was performed using the mogtest module of Stata10.0 to test the eligibility of the condition.

[Polymorphisms of drug-metabolizing enzymes genes in a Han Chinese population].

Objective: To survey the frequencies and characteristics of polymorphism of seven genes coding drug-metabolizing enzymes in a Han Chinese population.

Methods: Genomic DNA was extracted from peripheral blood in 1382 unrelated Han Chinese volunteers. Genotypes of CYP450, NQO1, MPO, MTHFR, NAT2, TPMT*3B(G460A) and TPMT*3C(A719G) were analyzed by PCR-RFLP.

[Clinical observation on the method for nourishing blood and moisturizing eye on xerophthalmia].

Objective: To observe therapeutic effect of the method for nourishing blood and moisturizing eye on xerophthalmia.

Methods: Fifty-one cases of xerophthalmia were randomly divided into a treatment group and a control group. The treatment group were treated by acupuncture, moxibustion with Chinese medicine, and auricular point pressing, and the control group were treated with dripping of artificial tears.