Detection of partial discharge patterns in hybrid high voltage power transmission lines based on parallel recognition method.

Due to their specially designed structures, the partial discharge detection of hybrid high-voltage power transmission lines (HHVPTL) composed of overhead lines and power cables has made it difficult to monitor the conditions of power transmission lines. A parallel recognition method for partial discharge patterns of HHVPTLs is proposed by implementing wavelet analysis and improved backpropagation neural network (BPNN) to address the shortcomings of low efficiency, poor accuracy, and inability to parallel analysis of current partial discharge (PD) detection algorithms for HHVPTLs. Firstly, considering the non-smoothness of the partial discharge of the HHVPTLs, the wavelet packet decomposition algorithm is implemented to decompose the PD of the HHVPTL and resolve the relevant signal indicators to form the attribute vectors.

Abnormal Freezing Effect on Electron Conduction of Ball-milled Lanthanum Trihydride for Superionic Conductor.

A recent finding shows that lattice deformation could transform the mixed electronic/hydride (H) conducting lanthanum trihydride (LaH) to a superionic H conductor. Such a feature would enable the development of a brand-new all-solid-state hydride ion battery. It is essential to elucidate the mechanism of such a phenomenon.

Research advances in the degradation of aflatoxin by lactic acid bacteria.

Aflatoxins are toxic secondary metabolites that often contaminate food and animal feed, causing huge economic losses and serious health hazards. Aflatoxin contamination has become a major concern worldwide. Biological methods have been used to reduce aflatoxins in food and feed by inhibiting toxin production and detoxification.

3, 3'-diindolylmethane, a natural aryl hydrocarbon receptor agonist, alleviates ulcerative colitis by enhancing "glycolysis-lactate-STAT3″ and TIP60 signals-mediated Treg differentiation.

Background: Aryl hydrocarbon receptor (AhR) plays an important role in the occurrence and development of ulcerative colitis (UC). In this study, the effect and mechanism of 3, 3'-diindolylmethane (DIM), the classical AhR agonist, on UC was investigated from the angle of recovering the balance of Th17/Treg.

Methods: The in vivo colitis model was established in mice by using dextran sulfate sodium, and CD4 T cells were used to simulate the in vitro differentiation of Treg and Th17 cells.

Ru-Ni Alloy Nanoparticles Loaded on N-Doped Amphiphilic Mesoporous Hollow Carbon@silica Spheres as Catalyst for the Hydrogenation of α-Pinene to cis-Pinane.

N-doped mesoporous carbon spheres (NHMC@mSiO ) encapsulated in silica shells were prepared by emulsion polymerization and domain-limited carbonization using ethylenediamine as the nitrogen source, and Ru-Ni alloy catalysts were prepared for the hydrogenation of α-pinene in the aqueous phase. The internal cavities of this nanomaterial are lipophilic, enhancing mass transfer and enrichment of the reactants, and the hydrophilic silica shell enhances the dispersion of the catalyst in water. N-doping allows more catalytically active metal particles to be anchored to the amphiphilic carrier, enhancing its catalytic activity and stability.

Therapeutic effect and mechanism of combination therapy with ursolic acid and insulin on diabetic nephropathy in a type I diabetic rat model.

This work aims to investigate the therapeutic effect of ursolic acid (UA) plus insulin (In) on diabetic nephropathy (DN) in streptozotocin (STZ)-induced T1DM rats. The experimental groups and operational details are as follows: A total of thirty-two SD rats were divided into four groups: the DN model group (DN, = 8), DN + In treatment group (DN + In, = 8), DN + In + UA administration group (DN + In + UA, = 8), and negative control group (control, = 8). After 8 weeks, changes in renal function indices and pathological damage were assessed.

A flavonoid derivative of icariside II (YS-10) improves erectile dysfunction in radiation-injured rats via oxidative stress pathway.

Background: We explored the preventive effect and mechanism of YS-10, a novel synthesized flavonoid derivative based on the structure of icariside II (ICA II), on a rat model of radiation-induced erectile-dysfunction (Ri-ED).

Methods: Eighteen 10-week-old male Sprague-Dawley (SD) rats were randomly divided into 3 groups. Six rats were used as the control group (Control), and the remaining 12 were given a single X-ray irradiation of 20 Gy in the prostate and then randomly divided into the radiation injury group (Ri-ED group) and YS-10 treatment group (Ri-ED+YS-10, 2.

[Preventive and therapeutic effects of Icariside Ⅱ on radiation injury-induced erectile dysfunction in rats].

Objective: To explore the preventive and therapeutic effects of Icariside Ⅱ (ICAⅡ) on radiation injury-induced ED (Ri-ED) in rats.

Methods: Twenty-four 10-week-old male SD rats received exposure of the prostate to single X-ray irradiation of 20 Gy, and were randomly equally divided into an Ri-ED group (6 survived and 6 died) and a treatment group treated with ICAⅡ at 4.5 mg/kg/d (9 survived and 3 died).

[Low-intensity pulsed ultrasound versus low-energy shock wave in the treatment of neurogenic penile erectile dysfunction].

Objective: To investigate the effect and safety of low-intensity pulsed ultrasound (LIPUS) versus low-energy shock wave (LESW) in the treatment of neurogenic penile ED in male SD rats.

Methods: Twenty-four 12-week-old male SD rats were randomly divided into four groups of an equal number: sham operation, bilateral cavernous nerves injury (BCNI), LIPUS (300 mW /cm2, 3 times a week for 2 weeks), and LESW (300 strokes once, 3 times a week for 2 weeks). At 28 days after intervention, the erectile function of the rats was assessed by comparing the ratio of maximum intracavernous pressure to mean arterial pressure (ICPmax/MAP), and the histopathological changes in the corpus cavernosum of the penis were observed by immunohistochemistry, immunofluorescence staining, and Masson trichromatic staining.

Activation of ATM/Chk2 by Zanthoxylum armatum DC extract induces DNA damage and G1/S phase arrest in BRL 3A cells.

Ethnopharmacological Relevance: Zanthoxylum armatum DC is a traditional medicinal plant. It is widely used in clinical treatment and disease prevention in China, India and other regions. Modern studies have reported the phytotoxicity, cytotoxicity and the animal toxicity of Zanthoxylum armatum DC, and the damage of genetic material has been observed in plants, but the detailed mechanism has not been explored.

Periodicity and multi-periodicity generated by impulses control in delayed Cohen-Grossberg-type neural networks with discontinuous activations.

This paper discusses the periodicity and multi-periodicity in delayed Cohen-Grossberg-type neural networks (CGNNs) possessing impulsive effects, whose activation functions possess discontinuities and are allowed to be unbounded or nonmonotonic. Based on differential inclusion and cone expansion-compression fixed-point theory of set-valued mapping, several improved criteria are given to derive the positive solution with ω-periodicity and ω-multi-periodicity for delayed CGNNs under impulsive control. These ω-periodicity/ω-multi-periodicity orbits are produced by impulses control.

Novel liquid fermentation medium of and optimization of hydrothermal reflux extraction of cordycepin.

In this study, we developed a novel liquid fermentation medium of using pupa powder and wheat bran as nitrogen resources instead of the traditionally used peptone. This process not only reduced the cost by approximately 50%, but increased production by over 30%. Then, we explored a method to extract and purify cordycepin by combining hydrothermal reflux extraction with macroporous resin adsorption, which is inexpensive and suitable for the industrial production.

Urological complications after radical hysterectomy with postoperative radiotherapy and radiotherapy alone for cervical cancer.

Radiotherapy is a reliable method to cure cervical cancer patients, but it could cause serious urological complications after the treatment due to the anatomical location of the cervix. The main purpose of this retrospective analysis is to study the incidence, latency, and therapeutic efficacy of urological complications caused by radical hysterectomy with postoperative radiotherapy or radiotherapy alone in patients with cervical cancer.A retrospective analysis was conducted on patients with cervical cancer who received radical hysterectomy with postoperative radiotherapy or radiotherapy alone at the First Hospital of Jilin University between January 2010 and May 2016.

Rare adrenal gland incidentaloma: an unusual Ewing's sarcoma family of tumor presentation and literature review.

Background: Members of the Ewing's sarcoma family of tumor (ESFT) are malignant neoplasms and rarely observed in the adrenal gland.

Case Presentation: We report an extremely exceptional case of ESFT rising from the adrenal gland in a 57-year-old Chinese man. The patient was hospitalized with abdominal swelling for 2 months.

Retroperitoneoscopic ureteroplasty for retrocaval ureter: report of nine cases and literature review.

Objective: The aim of this study was to report the experience of retroperitoneal laparoscopic ureteroplasty for nine cases of retrocaval ureter.

Material And Methods: Six males and three females were referred with a diagnosis of retrocaval ureter. A retroperitoneal laparoscopic approach was taken in all patients, who were diagnosed by intravenous pyelography (IVP), computed tomography urography and retrograde pyelography.

[Construction and expression of the eukaryotic expression vector containing AIF gene].

Objective: To construct the eukaryotic express vector containing apoptosis-inducing factor (AIF) gene and to study its expression in A549 cells.

Methods: According to the GenBank AIF mRNA sequence, specific primers to amplify AIF gene from lung carcinoma cell line A549 by RT-PCR was designed. The amplified AIF gene fragment was cloned into plasmid pUC-T by TA cloning, then double enzyme digestion and DNA sequencing were used to identifying the positive recombinant AIF-pUC-T.

[Effect of PARP-1 inhibitor 4-amino-1 ,8-naphthalimide on the on the sensitivity of adriamycin].

Objective: To explore the effect of inhibition of poly (ADP-ribose) polymerase-1 (PARP-1) on the sensitivity of cells to adriamycin (ADM).

Methods: Mouse embryonic fibroblasts (MEFs) were divided into two groups according to whether they were treated with 4-amino-1,8-naphthalimide (4-AN) or not. And then the differences of cell viability and genotoxicity between the 4-AN treatment group and the non-treated group were compared after exposure to ADM.

Deregulated expression of DNA polymerase β is involved in the progression of genomic instability.

Deregulated expression of DNA polymerase beta (pol β) has been implicated in genomic instability that leads to tumorigenesis, yet the mechanisms underlying the pol β-mediated genetic instability remain elusive. In this study, we investigated the roles of deregulated expression of pol β in spontaneous and xenobiotic-induced genetic instability using mouse embryonic fibroblasts (MEFs) that express distinct pol β levels (wild-type, null, and overexpression) as a model system. Three genetic instability endpoints, DNA strand breaks, chromosome breakage, and gene mutation, were examined under various expression levels of pol β by comet assay, micronuclei test, and hprt mutation assay.

Links between DNA polymerase beta expression and sensitivity to bleomycin.

Bleomycin (BLM), an important anti-tumor antibiotic, enables cell death through oxidative DNA damage mediated by reactive oxygen species (ROS). However, increasing cellular resistance has become a serious limitation to its clinical application. Base excision repair (BER), the major pathway for repairing oxidative bases, is involved in resistance of DNA-damaging anticancer drugs.

[Effects of pol beta on biological characteristics and DNA damage in mouse embryonic fibroblast].

Objective: To explore the effect of DNA polymerase beta (pol beta) expression level on biological characteristics of mouse embryonic fibroblast (MEF) and the cellular response to DNA damage induced by potassium dichromate.

Methods: pol beta wild-type cells (pol beta +/+), pol beta null cells (pol beta -/-) and pol beta overexpressed cells (pol beta oe) were applied as a model system. The growth curve of cells was plotted by MTT assay; the doubling time of cells was detected by double time experiment; the spontaneous mutation frequency was determined by HGPRT gene mutation method and single cell gel electrophoresis assay (SCGE) was employed to observe the DNA damage either happened spontaneously or induced by potassium dichromate.

Involvement of DNA polymerase beta in repairing oxidative damages induced by antitumor drug adriamycin.

Adriamycin (ADM) is a widely used antineoplastic drug. However, the increasing cellular resistance has become a serious limitation to ADM clinical application. The most important mechanism related to ADM-induced cell death is oxidative DNA damage mediated by reactive oxygen species (ROS).

[Cigarette smoke-induced oxidative damage to human bronchial epithelial cells].

Objective: To determine the oxidative damage of mainstream smoke (MS) on Human bronchial epithelial cells (HBE) and its role in lung cancer.

Methods: MTT assay was used to test the cytotoxicity of MS on HBE. The HBE cells were treated with different concentrations of MS for 12 h.