The Study on Nondestructive Detection Methods for Internal Quality of Korla Fragrant Pears Based on Near-Infrared Spectroscopy and Machine Learning.

Quality control and grading of Korla fragrant pears significantly impact their commercial value. Rapid and non-destructive detection of soluble solids content (SSC) and firmness is crucial to improving this. This study proposes a method combining near-infrared spectroscopy (NIRS) with machine learning for the rapid, non-destructive detection of SSC and firmness in Korla pears.

Iron(II)-Catalyzed Synthesis of Nitrated Dihydropyrazole via a Nitrification and C-H Activation/Cyclization Cascade Reaction.

A route for nitrification and C-H activation/cyclization of ()--allyl-'-benzylidenebenzenesulfonohydrazide and cobalt nitrate via an iron(II)-catalyzed cascade reaction to synthesize nitrated dihydropyrazoles has been developed. The method features convenient operation and good functional group tolerance. In addition, it employs insensitive and inexpensive FeSO as the catalyst and provides a direct approach for the preparation of dihydropyrazoles.

Predictive Value of Lump Aspect Ratio, Boundary Clarity, and Spiculation/Angularity in Distinguishing Benign and Malignant Breast Lumps.

Background: Breast cancer is a prevalent malignancy globally, necessitating accurate diagnostic tools for early detection and intervention. Ultrasound imaging plays an important role in breast lesion assessment, with various morphological features serving as key indicators of malignancy.

Objective: This study aimed to employ logistic regression analysis to investigate ultrasound indices for effectively distinguishing between benign and malignant breast masses.

Microexplosions in bulk sapphire driven by simultaneously spatially and temporally focused femtosecond laser beams.

We report experimental results on the formation of microvoids in bulk sapphire produced through the single-shot illumination of the sample by near-infrared, simultaneously spatially and temporally focused (SSTF) laser beams. Compared with the cases of tightly focused femtosecond Gaussian and flattop beams, the SSTFs produce internal microvoids with significantly larger volumes and without cracks between the interaction sites, which may be beneficial for applications in volumetric data storage and for the studies of exotic, super-dense elemental phases contained in the densified shells surrounding the microvoids.

Damage Inside Borosilicate Glass by a Single Picosecond Laser Pulse.

We investigate damage inside the bulk of borosilicate glass by a single shot of IR picosecond laser pulse both experimentally and numerically. In our experiments, bulk damage of borosilicate glass with aspect ratio of about 1:10 is generated. The shape and size of the damage site are shown to correspond to an electron cloud with density of about 1020 cm-3.

Measurements of fluence profiles in femtosecond laser filaments in air.

We introduce a technique to measure fluence distributions in femtosecond laser beams with peak intensity of up to several hundred terawatts per square centimeter. Our approach is based on the dependence of single-shot laser ablation threshold for gold on the angle of incidence of the laser beam on the gold sample. We apply this technique to the profiling of fluence distributions in femtosecond laser filaments at a wavelength of 800 nm in air.

Expression of proteasome activator REGγ in human laryngeal carcinoma and associations with tumor suppressor proteins.

The functional significance of the proteasome activator REGγ in the regulation of cell proliferation and apoptosis has been recognized. However, pathological contributions to tumor development remain to be elucidated. Both oncogenic proteins and tumor suppressors are targeted by REGγ for proteasomal degradation.

Diode-pumped cw Nd:YAG three-level laser at 869 nm.

We report for the first time (to our knowledge) a diode-pumped Nd:YAG laser emitting at 869 nm based on the (4)F(3/2)-(4)I(9/2) transition, generally used for a 946 nm emission. Power of 453 mW at 869 nm has been achieved in cw operation with a fiber-coupled laser diode emitting 35.4 W at 809 nm.

[Phylogenetic analysis of 2009 H1N1 (A) influenza virus based on genomic sequence features].

From April 2009 onward, a new strain of human H1N1 influenza virus has swept over the world. The genome of influenza virus consists of 8 segments, encoding 10 proteins, respectively. The reassortments among the 8 segments cause the variation of influenza virus.

All-solid-state cw sodium D2 resonance radiation based on intracavity frequency-doubled self-Raman laser operation in double-end diffusion-bonded Nd3+:LuVO4 crystal.

We report for the first time (to our knowledge) cw orange-yellow emission at 589 nm from a compact double-end diffusion-bonded Nd(3+):LuVO(4) self-Raman laser with intracavity frequency doubling in LiB(3)O(5), pumped by an 880 nm diode laser. A 3.5 W cw orange-yellow emission with an overall diode-to-visible conversion efficiency of 13.

All-solid-state cw frequency-doubling Nd:YLiF4/LBO blue laser with 4.33 W output power at 454 nm under in-band diode pumping at 880 nm.

We generated efficient blue laser output at 454 nm by intracavity frequency doubling of a continuous-wave (cw) diode-pumped Nd:YLiF(4) (Nd:YLF) laser at 908 nm based on the (4)F(3/2)-(4)I(9/2) transition. With 32.8 W of incident pump power at 880 nm and the frequency-doubling crystal LiB(3)O(5), a level as high as 4.

[Effect of PTU on the expression of thyroid TPO, Tg mRNA in rats].

Objective: To explore the mechanism and the compensation proceeding of thyroid hyperplasia caused by PTU.

Methods: PTU was administered to rats by gavage at a dose of 5.0 mg/kg B.

[Effects of Panax notoginseng saponins on anti-hyperglycemic, anti-obese and prevention from kidney pathological changes in KK-Ay mice].

Objective: To observe the effects of Panax notoginseng saponins (PNS) on anti-hyperglycemic, anti-obese and prevention from kidney pathological changes in a type 2 diabetic KK-Ay gene mice model.

Methods: All animals were divided into 4 groups: Normal control group (C57BL/6J mice) were treated by NS 10 mL/kg, KK-Ay mice were subdivided into 3 groups as DM administrated NS 10 mL/kg, PNS 50 mg/kg, PNS 200 mg/kg respectively. All the animals received daily intraperitoneal injections for 30 days consecutively.

[Experimental study on hydrogel dressing in vein injury prevention and treatment].

Objective: To observe the efficacy of hydrogel dressings in preventing and treating vein injury of rabbits so as to provide a experimental evidence for clinical application.

Methods: Twenty-four healthy large-eared Japanese rabbits (48 ears) were chosen, weighing (2.15 +/- 0.

[Time-effect study of propylthiouracil-induced thyroid gland hyperplasia].

Objective: Establish an effective method for in vivo short-time standardized discriminating system of thyroid hormone disruptors.

Methods: 4 experimental groups treated with PTU lavage for 3, 6, 9, 12 days respectively and one dissolvent group for control. 10 rats in each group were sacrificed in due time with the serum being extracted and detected for T3, T4 and TSH by chemoluminescence.

Scanning electron microscopic observation of erythrocytes and endothelial cells of electrified death rabbits.

To investigate the evidence of electrified death without electric mark, four animal models were developed, which were electrified to death without electric mark left, contrasted with four non-electrified to death models. Erythrocyte and endothelium of aorta and pulmonary artery were observed by scanning electron microscope. It was suggested that some pores can only be seen on the surface of erythrocytes and endothelial cells of aorta and pulmonary artery of those death models group two electrified.

[The expressions of HSP 70 mRNA and c-fos mRNA in the skeletal muscle and cardiac muscle of rabbits by electrocuted].

Objective: To study the changes of HSP 70 mRNA and c-fos mRNA expression and to find a method to differentiate antemortem from postmortem electrocution.

Methods: Fifteen New Zealand rabbits were randomly divided into three groups, the antemortem electrocution group, the postmortem electrocution group, and the control group. Each group consists of five rabbits.

[Study on preventing effects of procyanidins on selenite cataract development in rats].

Objective: To study the preventing effects of procyanidins (PC) on selenite cataract in rats and the time-effect relationship.

Method: Forty five SD rats were divided into three groups: control, model and experiment groups. The rats in the experiment group were fed additionally with the PC by 80 mg x kg(-1) when they were supplied the equal selenite with the model group.

Endothelial cell membrane perforation of aorta and pulmonary artery in the electrocution victims.

Some electrocution deaths occur without detectable current marks on the skin, making forensic examination to determine the true cause of death more difficult. Because arterial thrombosis was a frequent finding in victims of electrocution, we investigated injury to the endothelium of the aorta and pulmonary artery with a scanning electron microscope in five cases of death known to be caused by electrocution. We found large pores on the surface of endothelial cells of the aorta and pulmonary artery in those who died of electrocution, but no endothelial membrane perforation was found in those who died of cardiac diseases.

[The expression rule of proliferating cell nuclear antigen in rat thyroid of hyperplasia induced by propylthiouracil].

Objective: To study the expression rule of proliferating cell nuclear antigen (PCNA) in thyroid when the hyperplasia of male rat thyroid is induced by propylthiouracil (PTU).

Methods: PTU was administered to rats by gavage at a dose of 5.0 mg/kg B.

[Time course of the disruption of rat's thyroid function by pesticide N'N-methylene-bis].

Objective: To study the effect of pesticide N'N-methylene-bis on thyroid function in rats, and the time-effect relationship.

Methods: N'N-methylene-bis dimethylsulfoxide solution was administered to rats by gavage at a dose of 50 mg/kg body weight for 1, 3, and 5 days respectively. The rats in the control group were given solvent dimethylsulfoxide by oral gavage at the same volume.

[Impact of traditional Chinese medicine WPY on ICAM-1 expression and MPO activity in pancreas and lungs of rats with acute necrotizing pancreatitis].

Objective: To explore the character of the ICAM-1 induced change of polymorphonuclear neutrophil (PMN) in the pancreas and lung of rats with acute necrotizing pancreatitis (ANP) and to evaluate the effects of Chinese medicine WPY on ANP.

Methods: ANP model was induced by retrograde injection of 3.5% sodium taurocholic acid into the biliopancreatic duct of Wistar rats.