Plastic tubing protects flexible copper hose

Flexible copper purge and coolant hoses is covered with a high-temperature shrinkable plastic for protection against severe vibration during rocket engine tests. This type of tubing is being used on all flexible water tubes used in F-1 engine tests

More Reliable Multi-Function Wood-Harvesting Machines In the Future?

This paper explains why it has been difficult to get high mechanical availability with multi-function-machines. Simplified reliability theory is applied to demonstrate the relationship between Mean Time Between Failures of components and mechanical availability for machines of various complexities. The design engineer should reduce the number of components and find the right compromise between high reliability and low weight/low cost, thereby designing more reliable and cost-effective multifunction machines

A survey of speech education in the high schools of California

Perhaps the first justification for the inclusion of speech in today’s curriculum is the very evident predominance of oral communication in our lives. Painter has pointed out that “oral communication is the vehicle for 90 percent of the exchange of ideas.” A second justification for the belief that speech education is important today lies in the fact that our country is a democracy. Democracy is essentially a government by talk, a government in which problems are not settled by force, but in which problems are talked out of existence or into solution. Long ago Aristotle identified communication with political freedom under law and with sound ethics. “Communication is for the preservation and progress of a free society and for a good society.” The schools of the United States have an obligation to train their students in a thorough understanding of democratic principles and ideals. A third justification for speech education lies in the statement, “Speech makes the man; speech is the man.” Speech reflects the increasing stature of an effective individual. Speech education contributes to the two basic aims of all education: self-realization of the individual and social adjustment of the individual. Frequently interpersonal relationships are ineffective because people cannot or will not communicate clearly. This study is a research project attempting to ascertain the status of speech education in the public high schools of the State of California in the spring semester of 1954. It is hoped that the data herein presented will prove of value both to students who are preparing to teach speech and to teacher training departments. The opening chapter attempts to establish the importance of speech in education both through a brief historical record of the existence of speech in education and through four justifications for its inclusion in today’s curriculum

Designing a Green Roof for Ireland

A model is presented for the gravity-driven flow of rainwater descending through the soil layer of a green roof, treated as a porous medium on a at permeable surface representing an efficient drainage layer. A fully saturated zone is shown to occur. It is typically a thin layer, relative to the total soil thickness, and lies at the bottom of the soil layer. This provides a bottom boundary condition for the partially saturated upper zone. It is shown that after the onset of rainfall, well-defined fronts of water can descend through the soil layer. Also the rainwater flow is relatively quick compared with the moisture uptake by the roots of the plants in the roof. In a separate model the exchanges of water are described between the (smaller-scale) porous granules of soil, the roots and the rainwater in the inter-granule pores

A first-year middle school science teacher\u27s experiences navigating science content in a Dual Language Immersion Program

Dual Language Immersion Programs (DLIPs) are offered as a way to address the needs of the students in our classrooms with a primary language other than English and a way to promote multilingualism for both English learners and native-English speakers. This study examined a first-year middle school science teacher\u27s experi- ence teaching in a DLIP. The authors focused on the teacher\u27s challenges and how he handled the tensions between teaching science content and addressing issues of language development in a DLIP classroom envi- ronment. Based on classroom observations, pre- and post-year interviews, and weekly teacher reflections, themes emerged that reveal the teacher\u27s concern with teaching science in Spanish, the need for support from both administration and science content and DLIP mentors, students\u27 willingness to use Spanish, and the teacher\u27s lack of familiarity with DLIP curriculum and pedagogy, particularly in regard to balancing the teaching of content and language. This study provides implications for both teacher preparation programs and for DLIP school administrators

Näringsidkares ansvar för kvarglömd egendom

Syftet med uppsatsen var att undersöka skadeståndsansvaret för sakskada på lös egendom som glömts kvar eller tappats i en näringsidkares affärslokaler av en person som har eller har haft ett avtal med näringsidkaren för att utnyttja hans tjänster. För att kunna uppfylla det övergripande syftet med uppsatsen utgick jag från följande frågeställningar: - Under vilka förutsättningar kan en näringsidkare bli skyldig att ta hand om egendom som glömts kvar, tappats bort eller på annat sätt förlagts i dennes lokaler? - För den händelse att det föreligger en skyldighet att omhänderta egendomen, vad omfattar då denna skyldighet? - Kan näringsidkaren bli ersättningsskyldig gentemot konsumenten om denne åsidosätter en eventuell skyldighet att ta hand om egendomen och om så är fallet under vilka förutsättningar? - Om det är finns en skadeståndsgrundande förpliktelse att omhänderta egendomen, är det i sådana fall möjligt för näringsidkaren att friskriva sig från ansvar? Med sak eller egendom avses lösöre eller flyttbara saker, och inte det vidare begreppet lös egendom som förutom lösöre även omfattar rättigheter och fordringar. Min slutsats är att näringsidkare i en sådan situation som beskrivs ovan har en skyldighet att ta hand om sin medkontrahents egendom om den har hamnat i hans besittning, antingen baserat på reglerna i hittegodslagen 6 § om kvarglömd egendom och där ansvaret gentemot ägaren för skada på egendomen baseras på utomobligatoriska bestämmelser, eller i enlighet med de allmänna rättsprinciper rörande förvaring och tjänst som har kommit till utryck i konsumenttjänstlagens 32 §.The aim of this thesis is to investigate the liability for property damage which has been inflicted on personal property belonging to a private person which is left behind or has gotten lost in premises belonging to a businessman, when the owner has or has had a contract with the businessman concerning his services. In order to meet the overall objective of this paper, I formulated the following questions: - When, and under what conditions, can a businessman be obliged to take care of the private property that is left, lost or otherwise mislaid in his premises? - In the event that there is an obligation on the businessman’s part to take care of the property, what does that obligation encompass? - Can the businessman be held liable if he doesn’t fulfill any such obligation to take care of the property and, if so, under what conditions? - If there is a tort obligation to take care of the property, can the businessman be allowed to exonerate himself from responsibility? By private property I mean chattels or movable things, and not the broader concept of personal property that includes rights and claims. My conclusion is that a businessman that finds himself in a situation like the one above does have an obligation to take care of his business partner’s private property if it has ended up in his possession, either because of the law concerning lost property and where his obligation towards his partner is based on non-contractual rules, or in accordance with the general legal principles concerning services which has been codified in the law of customer service

Better beef from specialised breeds?

Den svenska nötköttsproduktionen baseras till ca 80 % på djur av mjölkras. Samtidigt blir det allt vanligare med rasmärkt kött ute i matbutikerna. Frågan är då om det finns några skillnader i kvalitet mellan kött från mjölk- och köttraser? Begreppet köttkvalitet omfattar många egenskaper men med fokus främst på köttets mörhet, marmorering, smak och saftighet. Utfodring, skötsel, slaktmognad och hängningstid är några faktorer som påverkar köttets slutliga kvalitet. Det är dock inte bara miljöfaktorer som har betydelse för köttkvaliteten, det finns även genetiska skillnader i köttkvalitet inte bara mellan mjölk- och köttraser utan även mellan olika köttraser. Bland annat skiljer sig mängden av enzymet calpastatin i muskler, vilket har inverkan på köttets mörhet. En större mängd calpastatin ger ett segare kött. Köttets mörhet skiljer sig under de första dagarna efter slakt mellan raser, där köttraser har visat sig ha ett mörare kött. Efter det att man låtit slaktkroppen hänga ytterligare en tid minskade skillnaderna. De skillnader man finner är att kött från mjölkraser, som holstein och friesian, har en högre grad av marmorering och ett gulare fett än köttraser, som charolais och hereford, vilka i sin tur har en mindre mängd kollagen än mjölkraser. Det finns alltså skillnader mellan mjölk- och köttraser gällande vissa köttkvalitetsegenskaper men med hjälp av metoder som förbättrar köttets mörhet, till exempel optimering av hängningstiden, kan skillnaderna utjämnas och ett kött som håller hög kvalitet erhållas oavsett ras