[Characteristics of acidification and the distribution of available phosphorus along soil depths in heavy clay soils in southern Henan Province, China].

The acidification of agricultural soil in the southern part of the North China Plain has become more obvious, which is particularly true for the heavy clay soil types, such as yellow-cinnamon and lime concretion black soils. To understand the spatial variability of the pH value and nutrients on the vertical agricultural soil profile of heavy clay soils in this area, we measured pH values and available phosphorus (AP) in 63 farmland sample points from Xiping County in the southern Henan Province. Geostatistical methods and ArcGIS technology were used to map soil pH values along three soil depths (0-10, 10-20, and 20-30 cm) and the spatial distribution of soil AP in the tillage layer (0-20 cm).

Limb-bud and heart as a novel biomarker for gastric intestinal type adenocarcinoma.

The present study compared the expression levels of limb-bud and heart (LBH) between gastric intestinal-type adenocarcinoma (GITA) and healthy gastric tissues; with the aim of investigating the possible effect of LBH on the prognosis of patients with GITA and to analyze the associated signaling pathways in GITA. Three Oncomine gastric datasets were utilized for the preliminary prediction of the expression levels of LBH mRNA in GITA and healthy gastric tissues. Gene expression and corresponding clinical data of 163 patients with GITA were downloaded from The Cancer Genome Atlas.

Effect of Apatinib on Serum CD4+CD25+ T cells, NK Cells, and T Cells Subgroup in Malignant Tumor.

Objective: The immune makers including CD4+CD25+ T cells, natural killer cells, and T cells subgroup were retrospectively analyzed to find the relationship between apatinib and the immune system in the patients treated with apatinib.

Method: Forty-two patients with advanced malignant tumors orally took apatinib as treatment and 16 patients with the same situation did not take apatinib as a control group. These patients were all included in the study, and they orally received apatinib 500 mg daily as monotherapy or combination.

Antibacterial Diphenyl Ether, Benzophenone and Xanthone Derivatives from Aspergillus flavipes.

The extract of the strain Aspergillus flavipes DL-11 exerted antibacterial activities against six Gram-positive bacteria. During the following bioassay-guided separation, ten diphenyl ethers (1-10), two benzophenones (11-12), together with two xanthones (13-14) were isolated. Among them, 4'-chloroasterric acid (1) was a new chlorinated diphenyl ether.

Early detection of enamel demineralization by optical coherence tomography.

Enamel is the outermost layer of the tooth that protects it from invasion. In general, an acidic environment accelerates tooth demineralization, leading to the formation of cavities. Scanning electron microscopy (SEM) is conventionally used as an in vitro tool for the observation of tooth morphology changes with acid attacks.

Cytotoxic abietane and kaurane diterpenoids from Celastrus orbiculatus.

Celastrus orbiculatus is a medicinal plant belonging to the Celastraceae family. In this survey on the secondary metabolites of plants for obtaining antitumor substances, the chemical constituents of the stems of C. orbiculatus were investigated.

detection of UV-induced acute skin effects using optical coherence tomography.

Ultraviolet (UV) rays have been identified as a carcinogen with long-term irradiation and are an important risk factor for skin cancer. Here, we report the use of optical coherence tomography/optical coherence tomography angiography (OCT/OCTA) to study acute UV-induced effects on skin . To understand the relationship between the acute effects and irradiated UV power density, three groups were irradiated with different power densities in our experiments.

PH-sensitive Dioctadecylamine-501 polymeric micelles for delivery of insulin.

In this work, fluorescently labeled smart micelle copolymers which consist of Dioctadecylamine-501 (DODA-501) as the hydrophobic segment, N-isopropylacrylamide (NIPAAm) as well as acrylic acid (AAc) as the hydrophilic segments were prepared. These micelles showed both thermo- and pH-sensitive properties due to the nature properties of NIPAAm and AAc, respectively. The particle size of the prepared micelles ranged from 94 approximately 200 nm and was found to increase with DODA-501 concentration.

[Spectral properties of 2-(2'-hydroxyphenyl) benzimidazole].

2-(2'-hydroxyphenyl) benzimidazole (HBI) is one kind of organic molecule with excited-state proton transfer (ESPT) effect. The absorption spectra of HBI were observed in toluene, the mixture of toluene and ethanol, and ethanol, respectively. It was found that the absorption spectra in the three solvents are similar.

[Spectroscopic investigation of 3-hydroxyflavone in different polarity and pH values solutions].

The absorption and fluorescence spectra of 3-hydroxyflavone (3-HF) in different polar solvents were observed with UV-Vis spectrometer and fluorescence spectrometer, respectively. There are three absorption bands in the absorption spectra, wherein two absorption bands with absorption peak at 300 and 345 nm, respectively, are strong, and the other one with absorption peak at 415 nm is weak When the samples in different polar solvents were excited by 345 nm light, there appeared two new fluorescence bands peaked at 400 and 526 nm, respectively. The fluorescence band at 400 nm is attributable to the emission from enol structure and its intensity increases with increasing the polarity of protic solvents; that at 526 nm is attributable to the emission from the isomer structure and its intensity decreases with increasing the polarity of protic solvents.

[The spectra properties of 2-(2'-hydroxyphenyl)benzothiazole in different solvents].

2-(2 -hydroxyphenyl)benzothiazole (HBT) is a typical compound with excited--state intramolecular proton transfer (ESIPT) effect. The mechanism of the influence of the solvent polarity on the ESIPT effect of HBT was investigated by means of absorption and fluorescence spectra in different polar solvents. The absorption spectra of HBT molecule in all solvents have the similar configuration and are mainly situated in the UV region from 260 to 370 nm.

[Study on the fluorescence spectra of 7-hydroxyquinoline in dimethyl sulfoxide solution].

7-hydroxyquinoline (7-HQ) is a kind of organic molecule with excited-state proton transfer (ESPT) effect. 7-HQ in ethanol solution causes ESPT reaction under the excitation of ultraviolet light. The fluorescence spectrum of the sample exhibits two bands.