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1.
This study explores the hypothesis that age-related declines in inhibitory ability are associated with increases in socially inappropriate behavior. Consistent with this hypothesis, older participants were less likely than younger participants to differentiate between public and private settings when inquiring about potentially embarrassing issues, according to their peers. Additionally, this indiscriminate public inquiry was associated with decreased closeness with participants' peers, particularly for older adults. Finally, this age-related increase in social inappropriateness was mediated by inhibitory deficits associated with aging. These results suggest that age-related deficits in inhibitory ability may cause people to become socially inappropriate against their will. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

2.
针对镍基合金的溶解方法、元素分析谱线的选择、仪器分析参数的优化、内标溶液的选用、基体元素的影响、干扰元素的校正及消除方法等进行了研究,确定了最佳试验条件;试验结果表明:检出限为0.024mg/L~0.85mg/L;加标回收率为97.1%~105.7%;方法的精密度(RSD,n=11)小于1.0%,本试验测定结果与标钢认定值和湿法分析结果做对照,都在允许偏差范围内,表明此方法精密度好,准确度高。  相似文献   

3.
ICP-AES法测定硅铁中锰、磷、铝、钙、铬、镍、铜   总被引:5,自引:1,他引:5  
曾海梅 《云南冶金》2004,33(5):44-46
以电感耦合等离子体光谱法(ICP-AES)直接同时进行硅铁中Mn、P、Al、Ca、Cr、Ni、Cu的测定,提出了:试样溶解的方法、元素的干扰情况、元素分析谱线的最佳选择和背景校正的最佳方法。优化了仪器工作条件,综合确定了最佳试验条件。结果表明,该法准确、快速、简便,精密度、回收率、标准样品分析对照均取得了满意的结果。  相似文献   

4.
5.
BACKGROUND AND OBJECTIVES: A 38-year-old woman presented with severe intractable pain in the sacral and perirectal areas secondary to metastatic stage I.B. squamous cell carcinoma of the cervix. METHODS: An indwelling epidural catheter was placed to control the patient's symptoms after failure of conservative therapies. Finally, an infusion containing isobaric 0.2% ropivacaine with 0.002% preservative-free morphine and 0.0002% epinephrine was started to treat her pain and preserve motor function to preserve quality of life. RESULTS: The patient obtained good pain relief with this regimen and was discharged home. She was able to walk with assistance and maintain good quality of life until her death approximately 7 weeks after the placement of the indwelling epidural catheter. CONCLUSION: The use of ropivacaine in combination with other analgesics, via an intrathecal catheter for patient-controlled analgesia, was an effective treatment for this patient. In the future, ropivacaine administered epidurally or intrathecally alone, or in combination with other analgesics, may become the local anesthetic of choice due to its preservation of motor function. Certainly, further scientific studies are indicated in the cancer patient population.  相似文献   

6.
It is with great excitement and enthusiasm that I write to you regarding several updates, new initiatives and changes with our journal. As you may have already noticed, this includes the change to a larger format, and a return to the color purple that helped define this journal from the early 1980s through the turn of the century, as well as to the original title “Psychotherapy.” The change in format will allow us to benefit from the standard American Psychological Association (APA) journal design and layout, leading to more efficient processing and arrangement within their electronic journal system. I have found this first year as the Incoming Editor of Psychotherapy to be as challenging, rewarding, and intellectually stimulating as I imagined it would be, and I remain quite excited and enthusiastic about the work ahead. (PsycINFO Database Record (c) 2011 APA, all rights reserved)  相似文献   

7.
Although many psychologists have expressed an interest in the phenomenon of creativity, psychological research on this topic did not rapidly expand until after J. P. Guilford claimed, in his 1950 APA presidential address, that this topic deserved far more attention than it was then receiving. This article reviews the progress psychologists have made in understanding creativity since Guilford's call to arms. Research progress has taken place on 4 fronts: the cognitive processes involved in the creative act, the distinctive characteristics of the creative person, the development and manifestation of creativity across the individual life span, and the social environments most strongly associated with creative activity. Although some important questions remain unanswered, psychologists now know more than ever before about how individuals achieve this special and significant form of optimal human functioning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

8.
Age-related deficits in executive control might lead to socially inappropriate behavior if they compromise the ability to withhold inappropriate responses. Consistent with this possibility, older adults in the current study showed greater social inappropriateness than younger adults—as rated by their peers—and this effect was mediated by deficits in executive control as well as deficits in general cognitive ability. Older adults also responded with greater social inappropriateness to a provocative event in the laboratory, but this effect was unrelated to executive functioning or general cognitive ability. These findings suggest that changes in both social and cognitive factors are important in understanding age-related changes in social behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

9.
Forgetting is often attributed to retrieval failure caused by background contextual cues changing over time. However, generalization between stimuli may increase over time and make them increasingly interchangeable. If this effect occurs with contextual cues, it might cancel any effect of a changing context. The authors review the evidence and suggest a resolution of this paradox. Although generalization gradients can change over time, the effect is not always strong. Increased responding to nontarget stimuli is not often shown, and few studies have demonstrated such changes with contextual cues in a way that rules out other interpretations. Even this example of forgetting may be caused by retrieval failure. The physical contexts manipulated in learning and memory experiments themselves occur within a superordinate temporal context and can thus be forgotten with no inherent challenge to a context-change account of forgetting. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

10.
Allergy to kiwi, poppy seeds, and/or sesame seeds often occurs in patients with a simultaneous sensitization to nuts and flour. Previously cross reactions have been verified by RAST inhibition. In this study the nature of this cross-reactivity is further characterized by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), followed by immunoblotting to nitrocellulose. The degree of cross-reactivity among kiwi, sesame seeds, poppy seeds, hazelnuts, and rye grain was found to be very high in the patients studied. The existence of both cross-reacting and unique components was observed; however, the cross-reacting and unique components could be different for different patients.  相似文献   

11.
In order to investigate the reduction mechanism of wustite in the presence of impurities usually met in the ironmaking industry, single crystals have been prepared with Mg, Mn, Ca, Al, and Si as dopants. The amounts of dopant in the lattice is around 4,4,2.5,0.5, and 0.01 mol pct, respectively, at 800 ‡C. For reduction with pure hydrogen, from 600 to 950 ‡C, Ca is the most efficient for accelerating the process at high degrees of reduction (75 pct) Mg and Mn are also active in this respect. Al has only a slowing down effect. Si also slows down the reaction at temperatures between 600 <T < 850 ‡C, but it becomes accelerating atT > 850 ‡C. In the presence of 20 torrs of water vapor in the gas, Mg and Mn are less efficient and unable to prevent the same slowing down of reaction observed with pure wustite at around 850 ‡C and classically called the ‡rate minimum‡. Our interpretation of these results is mainly based upon the observations of microstructures of partly reduced crystals which show a change in the texture of the iron produced which can be correlated with the reduction rate. These observations lead to a possible explanation in terms of the role of inclusions of impurity oxides on the sintering process of the metal, correlated with their ability to dissolve into the wustite lattice. However, this suggestion cannot apply in the case of Si at low temperatures, and this element is therefore supposed to play a role in the stages of reaction associated with the surface of the crystals.  相似文献   

12.
Frequently cited problems of dualism, as it pertains to the relation of psychological mind to sociocultural world, arise from assumptions of fixed societal and psychological ontologies. If, instead, societal and psychological ontologies are understood to be both emergent and mutable, as a consequence of their dynamic relation, many of the metaphysical and epistemological difficulties encountered by classic psychological-sociocultural dualism are avoided. To this end, an ontological and epistemological position, called societal-psychological constructionism, is presented. The merits of this position relative to postmodern textualist and social constructionist alternatives to classic psychological-sociocultural dualism are discussed. The major advantages of societal-psychological constructionism stem from its metaphysical claim that the psychological derives largely from the sociocultural, but is not reducible to the sociocultural, and in the epistemological implications of this claim. These advantages are particularly significant when contrasted with postmodern textualist and social constructionist accounts that mistakenly conflate the origins of psychological phenomena with psychological experience. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

13.
Barrett's esophagus (i.e. columnar epithelial metaplasia in the distal esophagus) is an acquired condition that in most patients results from chronic gastroesophageal reflux. It is a disorder of the white male in the Western world with a prevalence of about 1/400 population. Due to the decreased sensitivity of the columnar epithelium to symptoms, Barrett's esophagus remains undiagnosed in the majority of patients. Gastroesophageal reflux disease in patients with Barrett's esophagus has a more severe character and is more frequently associated with complications as compared with reflux patients without columnar mucosa. This appears to be due to a combination of a mechanically defective lower esophageal sphincter, inefficient esophageal clearance function, and gastric acid hypersecretion. Excessive reflux of alkaline duodenal contents may be responsible for the development of complications (i.e., stricture, ulcer, and dysplasia). Therapy of benign Barrett's esophagus is directed towards treatment of the underlying reflux disease. Barrett's esophagus is associated with a 30- to 125-fold increased risk for adenocarcinoma of the esophagus. The reasons for the dramatic rise in the incidence of esophageal adenocarcinoma, which occurred during the past years, are unknown. High grade dysplasia in a patient with columnar mucosa is an ominous sign for malignant degeneration. Whether an esophagectomy should be performed in patients with high grade dysplasia remains controversial. Complete resection of the tumor and its lymphatic drainage is the procedure of choice in all patients with a resectable carcinoma who are fit for surgery. In patients with tumors located in the distal esophagus, this can be achieved by a transhiatal en-bloc esophagectomy and proximal gastrectomy. Early adenocarcinoma can be cured by this approach. The value of multimodality therapy in patients with advanced tumors needs to be shown in randomized prospective trials.  相似文献   

14.
BACKGROUND: Use of blood culture studies for early diagnosis of Mycobacterium avium complex (MAC) infection has become important due to the recent development of effective antibiotic therapy for this condition. This study assessed the abdominal computed tomography (CT) findings in patients with AIDS who presented with bacteraemic MAC infection. METHODS: A retrospective analysis of abdominal CT scans was performed in 24 patients who presented with MAC-positive blood culture. CT images were reviewed specifically to evaluate for lymph node enlargement and attenuation, hepatomegaly, splenomegaly, bowel wall abnormality and for any other pathological changes. Comparison was made to prior reports of the CT findings in this disease process. RESULT: Enlarged intra-abdominal mesenteric and/or retroperitoneal lymph nodes were found in 10 patients (42%). These nodes were characterized by homogeneous, soft-tissue attenuation in eight of the 10 patients. Hepatomegaly, splenomegaly and small bowel wall thickening were noted in 12 (50%), 11 (46%) and four (14%) patients, respectively. CT findings were evaluated as normal in six (25%) patients. CONCLUSIONS: Enlarged mesenteric and/or retroperitoneal lymph nodes in AIDS patients with bacteraemic MAC were observed much less frequently on CT than previously reported in AIDS patient populations. Normal abdominal CT findings do not exclude this diagnosis and may reflect a trend towards earlier detection of MAC disease.  相似文献   

15.
The Council of Representatives is composed of the Board of Directors, division representatives, and state, provincial, and territorial association representatives. The representatives for the current year, with terms of office, are listed in this article. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

16.
Reviews the book, Lesbian, gay, bisexual, trans, and queer psychology: An introduction by Victoria Clarke et al., (see record 2010-08660-000). The goal of this book is to introduce readers to lesbian, gay, bisexual, transgender, and queer (LGBTQ) psychology, which encompasses many different aspects of the lives of LGBTQ people, including prejudice and discrimination, parenting and families, coming out, and identity development. While no small undertaking, disseminating this knowledge is crucial in order for the field of psychology to be a true “psychology of people” that examines the experiences of all people and is open to diverse ways of living. The authors succeeded in including nearly every major topic in LGBTQ psychology while continually inviting the reader to engage critically. The book is not only well written but designed in a way that makes it an easy read. Along with the usual chapter summaries and questions for discussion, pedagological features include key researcher and key study boxes that enable familiarity with cutting-edge thinking in the field. Being that they represent different interests and areas of expertise, the authors deliver varied perspectives and approaches. One of the greatest strengths of this book is its applicability to a wide audience, from students to practicing psychologists and researchers. As a whole, this book provides realistic ways of creating change, fosters understanding, and challenges the reader to be wary of the ways in which traditional norms can be harmful to LGBTQ people. (PsycINFO Database Record (c) 2011 APA, all rights reserved)  相似文献   

17.
Hebb claimed that Lashley, over the final two decades of his career, focussed exclusively on pointing out deficiencies in existing theory and stopped making positive contributions of his own. This characterization, which Hebb also suggested was why Lashley declined to collaborate on The Organization of Behavior (D. O. Hebb, 1949), is shown to be an overstatement. Lashley's coolness from the very outset toward Hebb's neuropsychological theory probably stemmed from disagreement with its substance. Yet it was a theory that in the end, Lashley himself appeared to accept. Curiously, Hebb's complaint about Lashley's excessively critical bent coexisted with a more measured view of his theoretical approach, a view in keeping with the one presented in this essay. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

18.
China has been attracting overseas construction enterprises with its vast expanding business market. The country is further opening its construction market to overseas businesses as the result of its accession to the World Trade Organization in 2001. In line with this development, there are an increasing number of foreign-invested construction enterprises (FICEs) entering into the market. Using Porter’s competitiveness factor analysis method, this paper identifies the FICEs’ strengths, weaknesses, opportunities, and threats in the Chinese construction market. Data used in the analysis stem from multiple sources including statistical reports, literature review, regulations and policies, and interviews with construction professionals. These findings should provide a valuable reference for overseas construction enterprises who are interested in developing business in the Chinese construction market.  相似文献   

19.
Disseminated infection with Microbacterium avium complex (MAC) in patients with AIDS is currently treated with a combination of antimycobacterial agents in order to prevent the selection of resistant mutant strains. Although clinical and microbiological responses can generally be achieved within a few weeks, relapses are common and require modification of the combination regimen or identification of effective alternate therapies. In this study we investigated the activities of rifabutin 0.5 mg/L, sparfloxacin 1 mg/L, clarithromycin 4 mg/L, amikacin 16 mg/L and ethambutol 2 mg/L, alone and in combination, against nine strains of M. avium isolated from the blood of patients with AIDS in order to identify regimens with the greatest therapeutic potential. Macrophages derived from human monocytes were infected with M. avium and inoculated with a single drug or a combination of drugs; cfu counts were performed at 0, 4 and 7 days after infection. At day 4 and at day 7, the combination of rifabutin, clarithromycin, amikacin and sparfloxacin displayed the highest degree of activity. However, the activity did not differ significantly from that of the combination of rifabutin, clarithromycin and ethambutol. The results of this study confirm the activity of combinations including rifabutin and clarithromycin (+/- ethambutol) in human monocyte-derived macrophages and suggest potentially useful associations in incorporating sparfloxacin and amikacin.  相似文献   

20.
从含锗铟锌铜的硫酸溶液中分离回收有价金属   总被引:1,自引:0,他引:1       下载免费PDF全文
研究了从含锗、铟、锌、铜的硫酸溶液中分离提取锗、铟、锌、铜的全萃取工艺流程。采用P204萃取铟、锌、铜,并用常规方法生产金属铟、ZnSO4.7H2O、粗铜粉。采用N235萃取锗、水解法生产锗精矿。结果表明,本工艺流程简单,分离提取效率高,成本低。  相似文献   

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