应用井约束正演模型技术解决地层圈闭描述中的几个难题——以济阳坳陷为例

井约束正演模型技术采用测井曲线建立地质模型，适用于研究复杂地质体。利用井约束正演模型技术解决了地层圈闭描述中圈闭分类地震特征的识别、地层超剥线位置的精确落实、地层圈闭储盖组合地震属性的预测、地层及储层变化特征的研究等技术难题，在济阳坳陷地层圈闭描述中发挥了重要作用，取得了良好的应用效果。     

STUDY OF NON-BOUSSINESQ EFFCET ON SEA SURFACE HEIGHT

A set of equations was derived for a nonBoussinesq ocean model in this paper. A new time-splitting scheme was introduced which incorporates the 4th-order Runge-Kutta explicit scheme of low-frequency mode and an implicit scheme of high-frequency mode. With this model, potential temperature, salinity fields and sea surface height were calculated simultaneously such that the numerical error of extrapolation of density field from the current time level to the next one could be reduced while using the equation of mass conservation to determine sea surface height. The non-Boussinesq effect on the density field and sea surface height was estimated by numerical experiments in the final part of this paper.     

纯轴流式透平级轮周效率的最佳速比

本文分析了当前确定纯轴流式透平级最佳工况的特性速比的一些主要公式及其计算误差,提出了一个计算任意反动度下透平级轮周效率的最佳速比的较精确的关系式,给出了相应最佳工况的透平级出口气流角随反动度的变化规律。这对在透平级的设计中,确定具有任意反动度的透平级的特性速比提供了可靠的依据。     

Predicting retention time shifts associated with variation of the gradient slope in peptide RP-HPLC

We have developed a sequence-specific model for predicting slopes (S) in the fundamental equation of linear solvent strength theory for the reversed-phase HPLC separation of tryptic peptides detected in a typical bottom-up-proteomics experiment. These slopes control the variation in the separation selectivity observed when the physical parameters of chromatographic separation, such as gradient slope, flow rate, and column size are altered. For example, with the use of an arbitrarily chosen set of tryptic peptides with a 4-times difference in the gradient slope between two experiments, the R(2)-value of correlation between the observed retention times of identical species decreases to ~0.993-0.996 (compared to a theoretical value of ~1.00). The observed retention time shifts associated with variations of the gradient slope can be predicted a priori using the approach described here. The proposed model is based on our findings for a set of synthetic species (Vu, H.; Spicer, V.; Gotfrid, A.; Krokhin, O. V. J. Chromatogr., A, 2010, 1217, 489-497), which postulate that slopes S can be predicted taking into account simultaneously peptide length, charge, and hydrophobicity. Here we extend this approach using an extensive set of real tryptic peptides. We developed the procedure to accurately measure S-values in nano-RP HPLC MS experiments and introduced sequence-specific corrections for a more accurate prediction of the slopes S. A correlation of ~0.95 R(2)-value between the predicted and experimental S-values was demonstrated. Predicting S-values and calculating the expected retention time shifts when the physical parameters of separation like gradient slope are altered will facilitate a more accurate application of peptide retention prediction protocols, aid in the transfer of scheduled MRM (SRM) procedures between LC systems, and increase the efficiency of interlaboratory data collection and comparison.     

The stability of gahnite doped with chromium pigments in glazes from the French manufacture of Sèvres

The French manufacture of Sèvres, famous for its production of fine porcelain artifacts, has been synthesizing pink pigments mainly composed of the spinel phase ZnAl_2?xCr_xO₄ with x varying from 0.25 to 0.41 since the middle of the 19th century. This kind of pigment is mixed with an uncolored frit to obtain decorations for porcelain artifacts. However, the pink color of the pigment is altered in a particular uncolored frit and a brownish color appears. The mechanism of this color change was investigated. Observations under a scanning electron microscope revealed the formation of a phase rich in Cr resulting from reactions between the uncolored frit and the pigment during firing. X‐ray diffraction combined with Rietveld refinements and X‐ray absorption near edge structure measurements at the Cr K‐edge showed that the new formed phase belongs to the same spinel phase ZnAl_2?xCr_xO₄ than the pigment, but with a higher Cr content x. We showed that its formation and thus the stability of the pigment is driven by the Al content in the uncolored frit.     

A powerful antiradiation compound revealed by a new high-throughput screening method

We present a new high-throughput screening method for the selection of powerful water-soluble antiradiation compounds. This method, which uses conventional immunoassay techniques, allowed the capacity of a given compound to protect thymidine from irradiation to be evaluated. By applying this assay to an antioxidant library, we showed for the first time that norbadione A, a well-known mushroom pigment, has pronounced atypical antiradiation properties.     

磁化海水在对虾育苗中的应用研究

经过磁场处理的海水;应用在中国对虾人工育苗和短期养成的研究中,产生了良好的生物效应,使用1600G、2400G、3000G三种磁感应强度的磁化装置处理的海水,对于仔虾的成活率都有较明显的提高,平均提高17.90％;在对虾短期养成(室内)中,使成活率和体长都比对照高,平均提高51.88％和10.56％。这主要因为     

Spiritual and coping needs of critically ill patients: validation of nursing diagnoses

Although testing of physiologic nursing diagnoses has occurred, critical care nurses have not validated the defining characteristics of the diagnoses, Spiritual Distress and Ineffective Individual Coping. This research report describes how critical care nurses rated the defining characteristics of these diagnoses. Specific strategies are given to assist nurses in recognizing the defining characteristics so that they can effectively intervene in the spiritual and coping needs of patients, thereby enhancing patient outcomes.