New enclaves in the Vaca Muerta mesosiderite: Petrogenesis and comparison with HED meteorites

Thirty-eight new enclaves from the Vaca Muerta mesosiderite have been studied, and detailed SEM-petrography was carried out on fourteen of them. Three are coarse-grained gabbroic ilmenite-free enclaves consisting mainly of pigeonite (En_) and plagioclase, seven are fine- to medium-grained ilmenite-bearing enclaves (En_) with ophitic to granular texture, and four are breccias. The most important breccias are diogenitic monomict breccias (En_) and an olivine-orthopyroxenite monomict breccia (Fo_). Reduction-induced orthopyroxene commonly surrounds pigeonite grains in the ilmenite-free enclaves, and occurs rarely in the marginal parts of the ilmenite-bearing enclaves. Whitlockite forms from augite lamellae as a result of reduction, and the ilmenite-free enclaves have been enriched in P_2O_5. Reduction of the ilmenite-free enclaves occurred in the parent body before mixing with Fe-Ni metal on the mesosiderite parent body. In the ilmenite-bearing enclaves reduction occurred on the mesosiderite parent body after Fe-Ni metal was mixed in. Thus, two stages of subsolidus reduction occurred in enclaves. Ilmenite and rutile occur in the ilmenite-bearing and diogenitic enclaves, and various subsolidus reaction textures of chromite, ilmenite, rutile and probably preexisting pseudobrookite are found. Al_2O_3-depleted chromite formed through the decomposition of Cr_2O_3-bearing ilmenite and pseudobrookite. Zircon and baddeleyite were also found in the ilmenite-bearing enclaves, and the latter is the first occurrence reported in mesosiderites. The ilmenite-bearing enclaves always contain baddeleyite, whereas ZrO_2-bearing phases are hardly ever found in HED meteorites. The bulk compositions of the enclaves were analyzed, and found to be more SiO_2-enriched than the HED meteorites. Highly SiO_2-enriched ilmenite-bearing enclaves are especially common, and follow the Nuevo Laredo trend of the eucrites, whereas the other ilmenite-bearing enclaves follow the Stannern trend. The highly SiO_2-enriched enclaves probably formed by fractional crystallization, whereas the other ilmenite-bearing enclaves formed through partial melting. The existence of the highly SiO_2-enriched enclaves may partly explain the SiO_2-rich nature of mesosiderites, in addition to the in situ reduction process. Our observations suggest that the parent body and the parental magmas of the enclaves in the mesosiderites were initially different from those of the HED meteorites

A Study on the Thin Plate with Carbon Fiber Reinforced Hybrid Composite

In this paper we describe an experimental study, this article is to report fundamental data of constructions attained by carbon fiber reinforced hybrid composite of O.9mm in thickness whose resin base was reinforced. As a result of this series of test and experiments, it was found that; it is possible to attain reinforced resin base of hybrid composite of C.F.R.P. 16 times as much in rigidity against bending load as compared with that of single construction was observed with composite of O.9mm lamina. It was found that sandwich construction of C.F.R.P. is superior, while, in the case of canape construction, it was found necessary to have C.F.R.P. on the tension side. G.F.R.P. has possibility to be reinforced composite material, although it is considerably less superior to C.F.R.P

Effect of different types of carbohydrate supplementation on glycogen supercompensation in rat skeletal muscle

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Formation and Mechanical Strengths of Aluminum-based Supersaturated Solid Solutions((A)Amorphous Alloys)

This paper deals with the recent data on the formation ranges, microstructure and mechanical properties of nonequilibrium supersaturated solid solution including fcc and amorphous phases in Al-Ln-TM (Ln=lanthanide metal, TM=transition metal) ternary system produced by rapid solidification. The tensile fracture strength (σ_f) increases with increasing solute elements and the highest σ_f is about 860 MPa for the fcc supersaturated solution and 1280 MPa for the amorphous phase. The compositional dependence of σ_f for both phases is dominated by the bonding nature among the constituent elements and independent of their atomic size ratios and atomic arrangements

Formation and High Mechanical Strength of Al-Based Alloys Containing a Nanoscale Icosahedral Phase As a Main Constituent

This paper reviews our recent results on the achievement of high tensile strength and good ductility for rapidly solidified Al-Mn-Ln and Al-Cr-Ln (Ln=lanthanide metal) alloys containing an icosahedral phase as a main constituent phase. The good mechanical properties are attributed to the simultaneous achievement of the following three structural effects resulting from rapid solidification and appropriate alloy design; (1) the formation of a mixed structure consisting of nanoscale icosahedral particles surrounded by Al phase, (2) the formation of the icosahedral phase at low solute concentrations, (3) the achievement of an ultra-fine mixed state of icosahedral and approximant regions caused by the phason strain-induced approximant transition in the nanoscale icosahedral particles. The utilization of the structural effects is expected to cause high mechanical strengths combined with good ductility for other quasicrystalline alloys

Eradication of intractable malignant ascites by abdominocentesis, reinfusion of concentrated ascites, and adoptive immunotherapy with dendritic cells and activated killer cells in a patient with recurrent lung cancer: a case report

<p>Abstract</p> <p>Introduction</p> <p>Malignant ascites is often a sign of a terminal stage in several malignant diseases. To control ascites, drainage and intra-abdominal chemotherapy are often used in those patients but eradication of ascites is difficult and prognosis is poor.</p> <p>Case presentation</p> <p>A 55-year-old woman was admitted to our hospital on 26 January 2007 with dyspnea, abdominal distention and oliguria. Abdominocentesis revealed peritoneal carcinomatosis resulting from abdominal recurrence from lung cancer. To alleviate the dyspnea and abdominal distention, we drained the ascites aseptically and infused them intravenously back into the patient after removal of tumor cells by centrifugation, and then concentration by apheresis. After the drainage of ascites, we intraperitoneally infused activated killer cells and dendritic cells from the patient's tumor-draining lymph nodes, together with 4.5 × 10⁵U interleukin-2 in 50 ml saline by 2.1 ml/hour infuser balloon.</p> <p>Drastic decreases in the tumor cell count and in ascite retention were observed after several courses of ascites drainage, intravenous infusion and intraperitoneal immunotherapy. The plasma protein level was maintained during the treatment notwithstanding the repeated drainage of ascites. Cell surface marker analysis, cytotoxic activities against autologous tumor cells and interferon-gamma examination of ascites suggested the possibility that these effects were mediated by immunological responses of activated killer cells and dendritic cells infused intraperitoneally.</p> <p>Conclusion</p> <p>Combination of local administration of immune cells and infusion of concentrated cell free ascites may be applicable for patients afflicted with refractory ascites.</p

Application of CO-oximeter for Forensic Samples

CO-oximeter is routinely used in clinical practice, and it has been applied in the field of forensic medicine. It is a simultaneous and nondestructive technique for the analysis of total hemoglobin (Hb) and various Hb species, such as oxyhemoglobin, reduced hemoglobin, carboxyhemoglobin, and methemoglobin. It automatically measures the proportion of each species of Hb and oxygen contents. This is an easy, rapid, and convenient way as the laboratory test. Since there are many advantages such as no necessity of sample preparation, easy handling, and portability, it may provide valuable information for forensic diagnosis. In the present paper, we discuss about the diagnostic application of CO-oximeter in the field of forensic medicine

Simplified Analysis of Toxic Gaseous Substance in Forensic Practice: Experiences from Japan

Toxicological examination in forensic practice is important for the proper diagnosis of acute poisoning. We have discussed the properties and features of poisoning incidents due to gaseous substances and elaborated on the simplified analytical techniques and apparatus used for their identification and quantitation for forensic purposes. Briefly, we have explained the simplified analysis of toxic gaseous substances such as carbon monoxide, hydrogen cyanide, hydrogen sulfide, and helium in blood. The techniques used include color testing, gas chromatography, detector tube, oximeter, and spectrophotometric method. In doing so, we have shared our experiences and highlighted the fact that the analysis of gaseous substances can be performed using readily available laboratory tools and equipment. We have emphasized the need and usefulness of the reference data tables for guiding forensic diagnosis. We hope that the above overview will assist other colleagues to implement such simplified techniques for the advancement of forensic medicine practice

Diffuse idiopathic skeletal hyperostosis (DISH) is a risk factor for further surgery in short-segment lumbar interbody fusion.

First online: 01 October 2014[Purpose] To elucidate the effect of diffuse idiopathic skeletal hyperostosis (DISH) on the clinical results of short-segment lumbar interbody fusion (LIF) for the treatment of degenerative lumbar spinal diseases. [Methods] The 208 patients who underwent one- or two-level LIF were selected as the subjects of this study. Patients with prior lumbar fusion surgery or follow-up <1 year were excluded. Outcome measures were surgery-free survival or the need for further surgery for pseudoarthrosis and/or adjacent segment disease (ASD). The Cox proportional-hazards model was used to identify possible risk factors (DISH, age, sex, number of levels fused, level of the lowest instrumented vertebra, and laminectomy adjacent to the index fused levels) for further surgery. [Results] Among the 208 patients (39 with DISH), 21 patients required further surgery during follow-up. Cox analysis showed that DISH (hazard ratio = 5.46) and two-level fusion (hazard ratio = 2.83) were significant independent predictors of further surgery. Age, sex, level of the lowest instrumented vertebra, and laminectomy adjacent to the index fused levels were not significant predictors. [Conclusions] DISH after short-segment LIF surgery is a significant risk factor for further surgery because of pseudoarthrosis or ASD