2,350 Result(s)
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Ting **g
Science, Humanities and Social Sciences, multidisciplinary
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Article
Scientific Research in China: The Academia Sinica
‘ACADEMIA SINICA’ is the official dcsignation for the Central Research Organisation established by the National Government in Nanking in 1928. According to its charter, it is the highest institution for scient...
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Relative Biological Effectiveness of Betatron and Conventional X-Radiation on the Regression of Mouse Tumours
THE development of more-powerful sources of X-radiation has made possible the investigation of the biological effectiveness of a variety of ionizing radiations. In vitro experiments have suggested that radiations...
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Isolation of I-Quinic Acid in Citrus Fruit
THE organic acids in citrus juices are chiefly citric and malic, although tartaric and oxalic acids also have been reported in grapefruit1. In our laboratory, succinic acid was found in frozen mature oranges. Wol...
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Psorosis Virus A on the Mandarin Orange (Citrus nobilis Lour.) in Malaya
PSOROSIS of citrus has hitherto not been reported from Malaya. Recent investigations on the possible presence of virus diseases on citrus have shown a large number of mandarin orange trees in Segamat, Johore, ...
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Effect of Thymectomy on Transplantation Resistance induced by Polyoma Tumour Homografts
POLYOMA virus will induce neoplasms in most strains of newborn mice but not usually in mice older than 2 weeks1,2. Adult mice infected with polyoma virus are relatively more resistant to challenge of syngeneic po...
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Carbon Dioxide Fixation in Malaria (Plasmodium lophurae)
THE main function of the mature erythrocyte is the transport of oxygen to and the removal of carbon dioxide from the tissues. The obligate intraerythrocytic parasite, malaria, not only requires constituents of...
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Leaf Resistance in Succulent Plants
REPORTS in the literature indicate or suggest that the stomata of succulent plants open in the dark and close in the light. This conclusion is based on direct observations1, measurements of diffusion with a porom...
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Failure to induce Transplantation Resistance against Polyoma Tumour Cells with Syngeneic Embryonic Tissues
MANY tumours contain new transplantation antigens not present in the host tissue of animals in which they arise. This applies particularly to those tumours induced by certain oncogenic viruses and chemical car...
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Effects of Antilymphocyte Serum on Induction of Tumours and Leukaemia by Murine Sarcoma Virus
THE suppression of immune reactions has helped to analyse their role in controlling neoplastic growths. The frequency of neoplasms which contain virus-specific transplantation antigens usually is strikingly in...
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RNA Dependent DNA Polymerase of Human Acute Leukaemic Cells
An RNA dependent DNA polymerase analogous to that of RNA tumour viruses has been found in lymphoblasts of leukaemic patients but not of normal donors. The enzyme can use an RNA template from mammalian cells to...
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Polymer structures and turbulent shear stability of drag reducing solutions
THE phenomenon of frictional drag reduction in the turbulent flow of Newtonian fluids, by the addition of high molecular weight polymers, has been known for some time. Because of the great potential it offers ...
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Specific afferent interference by antiserum of in vivo immunity
ANTISERUM can potentially interfere with effective immunity at three different parts of the immune response: afferent, central and efferent1–6. Coating or masking of antigenic sites on tumour cells with antiserum...
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Seasonal effects on carbon isotope composition of cactus in a desert environment
IN plants with crassulacean acid metabolism (CAM), CO2 is fixed in the light by ribulose-l,5-bisphosphate carboxylase1,2 and in the dark by phosphoenol pyruvate (PEP) carboxylase2,3. Because these two enzymes fra...
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Polymer effects on microjet impact and cavitation erosion
THERE is a growing interest in using high molecular weight polymers as additives in various fluid-engineering systems. These activities are mainly stimulated by the anomalous drag reducing characteristics some...
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Charm Search in p-N Collisions
Three experiments searching for charmed particles will be discussed. All three have been carried out with the double arm spectrometer of the MIT-BNL group [1] at BNL with an incident proton beam of 28.5 GeV.
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Inhibition by sera and soluble antigens of T-cell-mediated cytotoxicity against leukaemia-associated antigens
INTEREST in the regulation of T-cell-mediated cytotoxicity by the major histocompatibility complex (MHC) genes stems from the discovery of (1) an H–2 restriction of T-cell-mediated cytotoxicity, that is sensitisi...
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HLA restriction of cell-mediated lysis of influenza virus-infected human cells
MURINE T lymphocytes that mediate the lysis of virus-infected cells show specificity both for the viral cell surface antigens and for the H–2K or D antigens of the major histo-compatibility complex1–8. The cytoto...
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Effects of Elastomeric Additives on the Mechanical Properties of Epoxy Resin and Composite Systems
Thermosetting resins such as epoxy and polyimide are widely used as matrix materials in organic composite systems. These polymers are inherently brittle materials, poor in their resistance to the growth of int...
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First Results from Petra
PETRA1,2 is a e+e− storage ring located in Hamburg, Germany. It has a circumference of 2.3 km (see Table 1 and Figure 1). The bending radius of 256 m, and it has 8 straight sections. Four of the straight sections...
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Test Of Quantum Electrodynamics and the Study of Heavy Leptons
In the last decade there have been many experiments designed to test the validity of quantum electrodynamics and to study heavy leptons. In earlier days one performed experiments of the type γ + A → A + e+ + e−,1...
