Styles and stigmas are crucial components of the fertilization process that allows a pear tree to bear fruit. The information regarding the development mechanism of pear style and stigma is still unclear. Our results demonstrated that IAA, ABA, and BR are significantly increased at 1 DBF, while JA is decreased at 5 DBF.
View Article and Find Full Text PDFThe long-term phosphorus (P) adsorption and retention capacities of electric arc furnace (EAF) steel slag materials derived from one batch and a 278-d column experiments with a synthetic P solution were compared. The investigations of the regeneration of the P adsorption capacity by water level decrease was conducted. It was revealed column experiment on a long-term basis can determine P saturation of EAF accurately.
View Article and Find Full Text PDFObjective: To investigate the association between the anti-atherosclerotic effects of amlodipine and angiotensin converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism in elderly essential hypertensive (EH) patients.
Methods: A total of 220 EH patients were treated with amlodipine (2.5 - 10 mg, once daily) for twelve months and complete data were obtained from 208 patients with genotypes of II (n = 90), ID (n = 91) and DD (n = 27).
Huan Jing Ke Xue
August 2007
Static adsorption experiments were performed to investigate the adsorption characteristics of ammonium on soils and ditch sediments. Air-dry soil, ditch sediment and wet ditch sediment were used as three kinds of sorbents. The experiments showed that the adsorption isotherms on three sorbents agreed well with linear relation and conformed to Freundlich isotherm; the adsorption ability of soil was stronger than that of ditch sediment, and for the blank ammonium concentrations of soil were higher than that of sediments.
View Article and Find Full Text PDFZhong Nan Da Xue Xue Bao Yi Xue Ban
December 2005
Objective: To determine the therapeutic status and rate of reaching target blood pressure in elderly isolated systolic hypertension (EISH) patients who were hospitalized and to discuss the rationality of the drug therapy.
Methods: Three hundred and fifty-seven EISH inpatients were investigated retrospectively. The frequencies of using antihypertensive drugs and the strategy of drug therapy programs were calculated.
Guang Pu Xue Yu Guang Pu Fen Xi
December 2004
This paper describes the investigation of even-parity autoionization states of cerium atoms by three-step three-color resonance ionization spectroscopy (RIS). Twenty-seven odd-parity highly excited levels, whose transition probability is high, were used in this research. One hundred and forty-one autoionization states were found by these channels with the third-step laser scanning in the wavelength range of 634-670 nm.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
October 2002
Laser resonance ionization spectroscopy (RIS) is an excellent technique for investigating the complicated atomic structure of heavy elements especially in their higher-energy region. In order to obtain the optimal photoionization scheme of cerium atom, odd-parity high-lying states were studied using this technique. The 83 odd-parity high-lying levers have been firstly observed by two-step resonance laser excitation followed by non-resonance photoionization in the 32,042-34,575 cm-1 energy region.
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