Lincoln Memorial from Across the Potomac, Washington, D. C.

The print features a view of the Lincoln Memorial from across the Tidal Basin, located in Washington, D. C. The building is prominently featured in the background. Several trees partially block the view of the bottom of the building. Japanese Cherry trees line the Tidal Basin and are in full bloom. The building�s and trees� reflections are depicted in the Basin.https://scholarsjunction.msstate.edu/fvw-artifacts/3365/thumbnail.jp

Stroke in Devon: knowledge was good, but action was poor.

BACKGROUND AND AIM: Effective implementation of early treatment strategies for stroke requires prompt admission to hospital. There are several reasons for delayed admission. Good awareness should facilitate early admission. We identified local targets for education. METHODS: Four groups, each of 40 people, completed questionnaires to determine their knowledge of stroke symptoms and risk factors, and the action they took or would take in the event of a stroke. The groups were: patients with a diagnosis of stroke or TIA (within 48 hrs of admission); patients at risk of stroke; the general population; and nurses. RESULTS: Forty per cent of stroke patients identified their stroke. Median time from onset of symptoms to seeking medical help was 30 minutes. Medical help was sought by the patient themselves in only 15% of cases. In 80% of cases the GP was called rather than an ambulance. Of the at risk group, 93% were able to list at least one symptom of acute stroke, as were 88% of the general population. An ambulance would be called by 73% of the at risk group in the event of a stroke. Patients with self reported risk factors for stroke were largely unaware of their increased risk. Only 7.5% of at risk patients acquired their stroke information from the medical profession. CONCLUSIONS: Public knowledge about stroke is good. However, stroke patients access acute services poorly. At risk patients have limited awareness of their increased risk. A campaign should target people at risk, reinforcing the diagnosis of stroke and access to medical services

The influence of different joining processes on mechanical performance of carbon fiber/polyamide (CF/PA6) composites

تستخدم المواد المركبة المصنوعة من مادة البولي أميد (PA6) المقوى بألياف الكربون (CF) على نطاق واسع كمواد هيكلية في صناعات السيارات والفضاء نظرًا لخصائصها المتميزة. ومع ذلك ، نظرًا لمتطلبات السلامة الهيكلية للمواد المركبة ، لا تزال هناك محدودية فيما يتعلق بالإنتاج الفعلي للمواد المركبة المكونة من (CF/ PA6). الروابط القوية لصفائح CF/PA6 مطلوبة بشدة  لعمل تصميم خفيف الوزن يستخدم في العديد من المجالات. بهدف إجراء مقارنات ، تم تدراسة مختلف طرق المعالجة مثل الربط بمواد لاصقة والربط الحراري لتشكيل روابط اللإلفة بين صفحتين مركبتين من (CF/PA6). كما تم دراسة تأثير الطرق المختلفة ومتغيرات المعالجة  المختلفة على مقاومة القص للروابط. أظهرت النتائج أنه من السهل جدًا التعامل مع الروابط اللاصقة التقليدية وقد تتشكل روابط  أقوى إلى حد ما. يمكن استخدام الروابط الحرارية القائمة على التوصيل الكهربائي عن طريق CF لتشكيل توصيلات متلدنة بالحرارة مع المرونة في التصميم. يمكن أن تزيد الروابط الحرارية عن طريق الضغط الساخن من قوة الاتصال؛ عندما تتشكل بالضغط الساخن في ظروف مثالية في درحة حرارة تبلغ 250 درجة مئوية وضغط 2.5 ميجا باسكال ، فإن قوة القص للمفصل 138.85 ميجا باسكال. وبالتالي تم التأكيد على أنه يمكن الحصول على روابط قوية لأجزاء الصفائح للمادة المركبة CF/PA6  عن طريق الالتصاق الحراري عبرعملية الضغط  الساخن.Carbon fiber (CF) reinforced polyamide (PA6) composite materials are broadly used as structural materials in the automotive and aerospace industries due to their distinguished properties. However, due to requirements for the structural integrity of composite materials, there are still limitations in connection of the actual production of CF/PA6 composite. Strong joints of CF/PA6 laminates are highly required for the lightweight design in many fields. Aiming at making comparisons, different processing methods such as adhesive bonding and thermal jointing to form single lap joints between the two CF/PA6 composite laminates are studied. The influences of different processing methods and parameters on the shear strength of joints were also studied. Results showed that conventional adhesive bonding is quite easy to handle and may form rather stronger connections. Thermal joining based on electrical conductors of CF can be used to form a thermoplastic flexible joint design. Thermal joints by hot pressing can further increase the connection strength; when formed by hot pressing under optimum conditions of 250 °C and 2.5MPa, the joint has a shearing strength of 138.85 MPa. It is consequently confirmed that a strong joint of CF/PA6 composite parts could be obtained by thermal joints via the hot pressing process