Voyager mission to Mars     

Newell HE 《Science (New York, N.Y.)》1967,157(3794):1261

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Factors in the decline of coastal ecosystems     

Boesch D  Burreson E  Dennison W  Houde E  Kemp M  Kennedy V  Newell R  Paynter K  Orth R  Ulanowicz R 《Science (New York, N.Y.)》2001,293(5535):1589-1591

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Computer networks: prospects for scientists     

Newell A  Sproull RF 《Science (New York, N.Y.)》1982,215(4534):843-852

Computer networks are an integral part of the rapid expansion of computing. Their emergence depends both on evolving communication technologies, such as packet-switching and satellites, and on diverse experiments and innovations in the software tools that exploit communications. The tools provide computer users with facilities such as electronic mail, access to remote computers, and electronic bulletin boards. Scientists can both adapt and extend tools to meet the communication needs of their work, and several networks are developing to serve particular scientific communities.  相似文献   

Role of microbes in the smectite-to-illite reaction   总被引：1，自引：0，他引：1  

Kim J  Dong H  Seabaugh J  Newell SW  Eberl DD 《Science (New York, N.Y.)》2004,303(5659):830-832

Temperature, pressure, and time have been thought to control the smectite-to-illite (S-I) reaction, an important diagenetic process used for petroleum exploration. We demonstrated that microorganisms can promote the S-I reaction by dissolving smectite through reduction of structural Fe(III) at room temperature and 1 atmosphere within 14 days. This reaction typically requires conditions of 300 degrees to 350 degrees C, 100 megapascals, and 4 to 5 months in the absence of microbial activity. These results challenge the conventional concept of the S-I reaction and of reaction kinetic models.  相似文献   

A matter of perspective     

Newell H 《Science (New York, N.Y.)》1971,172(3981):331

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SECTION OF HISTORY OF CHEMISTRY     

Newell LC 《Science (New York, N.Y.)》1925,62(1592):16

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DYNAMIC MAGNETIC RESONANCE IMAGING OF THE NORMAL CANINE PITUITARY GLAND     

John P.  Graham  MVB  MSc  Gregory D.  Roberts  DVM  MS  Susan M.  Newell  DVM  MS 《Veterinary radiology & ultrasound》2000,41(1):35-40

The pituitary glands of six normal dogs were evaluated using dynamic magnetic resonance imaging. T1 weighted images were obtained every 13 seconds for three minutes of three contiguous slices through the pituitary gland following a bolus intravenous injection of gadolinium-DTPA. Contrast enhancement was seen initially in the region of the pituitary stalk at 52-65 seconds followed by uniform enhancement at 104-143 seconds post injection. This pattern of enhancement was seen in all subjects and is similar to that reported in humans.  相似文献   

Elevated temperature affects growth and hemato‐biochemical parameters,inducing morphological abnormalities of erythrocytes in Nile tilapia Oreochromis niloticus     

SM Majharul Islam  Rabaya Sultana  Mohammad Imran  Mst. Fatema Tuj Jannat  Mohammad Ashaf‐Ud‐Doulah  Md. Fazle Rohani  Christopher Brown  Md. Shahjahan 《Aquaculture Research》2020,51(10):4361-4371

Temperature is considered as an important environmental factor, and the increasing water temperature resulting from global warming is a great concern. The present study was conducted to examine the effects of elevated water temperature on growth, hemato‐biochemical parameters in Nile tilapia, Oreochromis niloticus acclimatized to three temperatures (31°C, 34°C and 37°C) for 60 days. Additionally, erythrocytic cellular abnormalities (ECA) and erythrocytic nuclear abnormalities (ENA) tests were assayed using peripheral erythrocytes after exposure to the three temperatures. Fish were sacrificed on days 7, 15, 30 and 60 of exposure. Growth performances viz., weight gain, % weight gain and specific growth rate (SGR) showed decreasing tendency at 34°C but significantly declined at 37°C compared to 31°C. The abundance of haemoglobin (Hb) and red blood cells (RBCs) significantly decreased in response to temperature increases, while white blood cells (WBCs) displayed the opposite response. At days 7 and 15, blood glucose levels significantly increased in response to the temperature increase, while at days 30 and 60 glucose declined. Frequencies of ECA and ENA were significantly enhanced at the highest temperature throughout the experimental period. Dissolved oxygen decreased and free CO₂ increased significantly with increasing temperature throughout the study period. The present study revealed that temperatures higher than 34°C may be hazardous to O. niloticus.  相似文献   

What is your diagnosis?     

K. L. Good  S. M. Newell  K. L. Cooke 《The Journal of small animal practice》1999,40(10):464-464

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SCINTIGRAPHIC DIAGNOSIS OF INSULINOMA IN A DOG     

Nola V.  Lester BVMS  Susan M.  Newell DVM  MS  Richard C.  Hill BVM  PhD  Otto I.  Lanz DVM 《Veterinary radiology & ultrasound》1999,40(2):174-178

Diagnosis of insulin-secreting tumors of the pancreas can usually be made on the basis of endocrine testing and exclusion of other causes of hyperinsulinism. In dogs, these tumors have a poor long-term prognosis due to a high rate of metastases and recurrence; staging (and therefore prognosticating) is difficult and usually done at the time of surgery. The purpose of this article is to describe a canine patient with an insulinoma, discuss the diagnostic imaging options for tumor evaluation and mention future directions for therapy. Insulinoma was suspected in an 8-year-old intact male Irish Setter. Somatostatin receptor scintigraphy using indium In-111 pentetreotide was performed and an area of increased radiopharmaceutical accumulation was found craniomedial to the right kidney. At surgery a small mass lesion in the pancreas and a larger, closely associated mass involving a mesenteric lymph node were removed. Histopathology confirmed the diagnosis of insulinoma with regional lymph node metastasis. The dog recovered from surgery and remained normal fourteen months later.  相似文献