Mixed ether bath for electrodeposition of aluminum

Anisole added to the bath mixture improves Brenner aluminum plating bath technique. Mixture has lower bath vapor-pressure and the electro-deposits obtained have greater physical strength than deposits from the Brenner bath

Huge Symptomatic Brenner Tumour Simulating Uterine Fibroid: A Case Report

Background: Brenner tumours are rare ovarian neoplasms which are frequently so small and symptomless as to be incidental findings at laparotomies for other conditions. The occurrence of a huge symptomatic Brenner tumour is even rarer in our environment. Our objective is to report a case of huge symptomatic Brenner tumour in a -67 year old post-menopausal woman and to alert practicing Gynaecologists that though rare, this condition still occurs and to re-emphasize the need for proper and routine histological examination of all surgical specimen.Method: The case note of the patient who presented at the gynaecology clinic of the University of Port-Harcourt Teaching Hospital with 15 years history of abdominal swelling and pain and repeated ultrasound scan diagnosis of multiple uterine fibroids and managed in our centre, was retrieved and studied. Literature on the subject was also reviewed using available journals and online resources.Results: The patient had exploratory laparotmy, total abdominal hysterectomy and bilateral salpingo-ovariectomy. Intraoperative findings were clean peritoneal cavity, a hard, 15cm diameter irregular right ovarian mass, slightly bulky uterus with 3cm long cervix, normal tubes and left ovary. The ovarian mass was confirmed histologically as benign Brenner tumour. She did remarkably well post-operatively and had since been discharged from the gynaecology clinic.Conclusion: This case illustrates that even rarer huge symptomatic Brenner tumours still occur in our environment. Practicing Gynaecologists should be aware of this condition and the need for proper histologic examination of surgically removed specimen.Keywords: Huge, symptomatic, Brenner Tumour, uterine fibroid

The Effect of Multiple Formats on Understanding Complex Visual Displays

Provides pedagogical insight concerning the skill of contours The resource being annotated is: http://www.dlese.org/dds/catalog_DLESE-000-000-004-595.htm

What makes the US Profit Rate Fall?

Since world war II there have been two quite distinct phases of world growth. In about 1965, a long slowdown set in which has still not ended. Robert Brenner (2002, 2003) has re-ignited the debate about its causes, claiming that nothing in either present or past economic theory explains it. He argues for a ‘third explanation’, alternative both to the profit-share hypothesis which dominates today, and the rising output-capital ratio account associated with Marx and Kalecki. Empirically, the evidence overwhelmingly shows the output-capital ratio is a dominant cause of postwar movements in the US profit rate; thus what Brenner maintains is theoretically impossible, is empirically true. The paper dissects this contradiction which, if economics proceeded scientifically, would lead to a radical critique of its own paradigm, but has instead led it to suppress and ignore the only coherent alternative. The paper shows Brenner’s rejection of the Marx-Kalecki framework arises because his theoretical paradigm, adapted uncritically from his critics, cannot allow for the effect of falling prices on capital stocks. His own ‘third explanation’ is incompatible with this same framework and can be sustained only by understanding it as the mechanism behind, or ultimate cause of, the movement of the output-capital ratio in price terms.crisis, inequality, Brenner, Value, profit rate, long waves, world systems, TSSI, temporalism

Brenner tumor of the ovary — ultrasound features and clinical management of a rare ovarian tumor mimicking ovarian cancer

  Objectives: To describe the ultrasound features of benign Brenner tumor in the background of complex clinical and histopathological pictures. Material and methods: We retrospectively identified patients with histologically confirmed benign Brenner tumor of the ovary who were treated in our institution in 2003–2016, and for whom complete imaging, clinical, perioperative and histopathological data were available in the database. Ultrasound findings were drawn from images and reports using terms and definitions of the International Ovarian Tumor Analysis group and pattern recognition description was applied. Results: Twenty-three patients were identified, most postmenopausal and asymptomatic. On ultrasound, 19/23 tumors were found unilaterally, 4/23 bilaterally, and 82% of tumors were detected in the left ovary. Most Brenner tumors (16/23) contained solid components and revealed no or minimal blood flow by subjective color score upon Doppler examination (19/23, 83%). Calcifications with shadowing were observed in 57% of all Brenner tumors and in 81% of tumors containing solid components. The complex appearance of the tumor misled the sonographers to describe the mass as malignant in 9 cases (39%), and frozen section was performed perioperatively. Surgery was performed via laparoscopy in 11 (48%) and via laparotomy in 12 (52%) cases. Conclusions: The complexity of the ultrasound picture, consisting of features like calcifications with acoustic shadowing, a poorly vascularized solid mass, and a left-sided localization could be signs of a benign Brenner tumor and could preop­eratively help to differentiate between benign and malignant tumor

(Meta-)stable reconstructions of the diamond(111) surface: interplay between diamond- and graphite-like bonding

Off-lattice Grand Canonical Monte Carlo simulations of the clean diamond (111) surface, based on the effective many-body Brenner potential, yield the $(2\times1)$ Pandey reconstruction in agreement with \emph{ab-initio} calculations and predict the existence of new meta-stable states, very near in energy, with all surface atoms in three-fold graphite-like bonding. We believe that the long-standing debate on the structural and electronic properties of this surface could be solved by considering this type of carbon-specific configurations.Comment: 4 pages + 4 figures, Phys. Rev. B Rapid Comm., in press (15Apr00). For many additional details (animations, xyz files) see electronic supplement to this paper at http://www.sci.kun.nl/tvs/carbon/meta.htm

Where is my hand?: Proprioceptive position sense and its applications in haptics

Smeets, J.B.J. [Promotor]Brenner, E.M. [Copromotor

Initial Chemical Events in the Energetic Material RDX under Shock Loading: Role of Defects

We use the recently developed reactive force field ReaxFF with molecular dynamics (MD) to study the role of voids on the initial chemical events in the high-energy material RDX under shock loading. We find that for strong shocks (particles velocity of 3 km/s) very small gaps (2 nm) lead to important over-heating (~ 1000 K). This over-heating facilitates chemical reactions and leads to a larger production of small molecules (such as NO2, NO, OH) than in perfect crystals shocked with the same strength. The chemical reactions occur after the void has collapsed and the ejected material re-compressed rather than when hot molecules are ejected out of the downstream surface

Historical sociology, international relations and connected histories

This article addresses three recent developments in historical sociology: (1) neo-Weberian historical sociology within International Relations; (2) the 'civilizational analysis' approach utilized by scholars of 'multiple modernities'; and (3) the 'third wave' cultural turn in US historical sociology. These developments are responses to problems identified within earlier forms of historical sociology, but it is suggested each fails to resolve them precisely because each remains contained within the methodological framework of historical sociology as initially conceived. It is argued that their common problem lies in the utilization of 'ideal types' as the basis for sociohistorical analysis. This necessarily has the effect of abstracting a set of particular relations from their wider connections and has the further effect of suggesting sui generis endogenous processes as integral to these relations. In this way, each of the three developments continues the Eurocentrism typical of earlier approaches. The article concludes with a call for 'connected histories' to provide a more adequate methodological and substantive basis for an historical sociology appropriate to calls for a properly global historical sociology