scholarly journals On the effect of heat on the chloride, bromide, and iodide of silver

1877 ◽  
Vol 25 (171-178) ◽  
pp. 280-291 ◽  
Keyword(s):  
Maximum Density ◽  
Allotropic Modifications ◽  
The Moment ◽  
Solid Bodies ◽  
Contraction And Expansion ◽  
Extremes Of Temperature ◽  
Made In

In a former paper I endeavoured to prove that the iodide of silver is capable of existing in three allotropic modifications, that it possesses a point of maximum density at or about 116° C., and that if a mass of the molten iodide be allowed to cool the following effects may be observed:—( α ) At the moment of solidification a very considerable contraction takes place; ( β ) the solid on further cooling undergoes slight and regular contraction, after the manner of solid bodies in general, until ( γ ) at or about 116° C. it undergoes sudden and violent expansion, passing from the amorphous into the crystalline condition; ( δ ) after undergoing this expansion the mass, on further cooling, undergoes slight expansion, and ( ϵ ) the coefficient of contraction diminishes as the temperature decreases (or otherwise expressed, the coefficient of contraction augments with the temperature). The following experiments were made in order to examine these effects more minutely, to determine the coefficients of contraction and expansion of the iodide, and to determine the coefficients of expansion of the chloride and bromide of silver between as great extremes of temperature as should be found practicable.

scholarly journals Notas em torno do cinema militante de 1960 e 1970 / Notes on the Militant Cinema of the Sixties and Seventies

2019 ◽  
Vol 15 (1) ◽  
pp. 79
Author(s):  
Julia Fagioli
Keyword(s):  
Point Of View ◽  
The Sixties ◽  
Political Challenge ◽  
The Moment ◽  
Collective Production ◽  
Made In

Resumo: Neste trabalho buscamos realizar uma breve genealogia – sempre inacabada – acerca das formas como a política – especificamente sua dimensão militante e engajada – se manifesta no cinema, a partir de um recorte histórico que privilegia a produção militante e coletiva dos anos 1960 e 1970. Nesse período vários coletivos e iniciativas individuais surgiram em torno de um cinema engajado. Ao recuperar algumas dessas iniciativas, é possível retomar também as questões que elas abordavam, tais como o ato de delegar a câmera ao trabalhador, as relações entre as imagens filmadas num momento de urgência – o ponto de vista – e sua articulação na montagem, o modo de distribuição dos filmes militantes. Assim, percebemos o quanto esse momento de contestação política será também o de uma invenção formal no âmbito do cinema.Palavras-chave: cinema militante; cinema coletivo; contra-informação.Abstract: In this paper we seek to develop a genealogy – always unfinished – about the ways in which politics – specifically in its militant and engaged dimensions – manifests itself in cinema, throughout a historical frame that privileges the militant and collective production from the sixties and the seventies. During this period, several collectives and individual initiatives emerged regarding an engaged cinema. By recovering some of these initiatives it is possible to also recapture the issues that they addressed, such as the act of delegating the camera to the workers, the relations between the images made in moments of urgency – the point of view – and its assemblage in montage, the modes of distribution of the militant films. Therefore, we realize that the moment of political challenge will also be of formal invention in the scope of cinema.Keywords: militant cinema; collective cinema; counter-information.

Characterization of a Composite Material Consisting of a Polyester Resin Matrix with Reinforcement of Horsemane in Flat Tissue

2020 ◽  
Vol 995 ◽  
pp. 49-55
Author(s):  
Christian G Bautista ◽  
Patricio I. Mena ◽  
Cristian A. Paredes ◽  
Marco Antonio Paredes
Keyword(s):  
Mechanical Characteristics ◽  
Sheet Steel ◽  
Resin Matrix ◽  
Matrix Resin ◽  
Biodegradable Composites ◽  
Test Pieces ◽  
Polyester Matrix ◽  
The Moment ◽  
Made In

The manufacture of mechanical components by means of biodegradable composites is the best alternative at the moment of reducing cost and weight, maintaining the mechanical characteristics. In this work the mechanical characteristics are shown as the result of combining a polyester matrix resin with a reinforcement of animal fiber such as horsehair. The results obtained correspond to mechanical characterization tests at traction, bending and impact by dart drop according to rules ASTM D3039/D3039M-17, D7264/D7264M-15 and D5628 respectively, made in four groups of test pieces of material combining a polyester matrix resin and reinforcement of horsemane. The development of materials composed of horsehair as reinforcements offers similar mechanical characteristics with traditional materials such as sheet steel or polymers, but with a considerable weight reduction, ideal for automotive applications such as bodywork or interior parts of vehicles.

Altitudinal Zonation of Geometrid Larvae (Lep.) during a Mass Occurrence on Birch at Sogndal, Western Norway, I967

1972 ◽  
Vol 3 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Sigmund Hagvar
Keyword(s):  
Maximum Density ◽  
Betula Pubescens ◽  
Birch Wood ◽  
Altitudinal Zonation ◽  
Western Norway ◽  
Mass Occurrence ◽  
Betula Pubescens Ehrh ◽  
Different Altitudes ◽  
Made In

AbstractLarvae of Geometridae (Lep.) attacked the birch wood (Betula pubescens Ehrh.) in the mountain slopes near Sogndal, Sogn, in I966 and I967. Collecting of larvae were made in I967 by sweep-netting on five stations at different altitudes up to timber line at 900 m a.s. The maximum density of Operophthera sp., at about 300 m a.s., was estimated to be about five times higher than the maximum density of Oporinia autumnata Bkh. just below the timber line. A horizontal, brownish belt, where the trees were heavily defoliated, extended from approximately 250 to 350 m a.s. The trees near the timber line were not so heavily defoliated. The least defoliated trees were found at about 650-700 m a.s., in the overlapping zone of the two geometrid species. Operophthera sp. was found at all altitudes, while O. autumnata occurred only in the upper half of the birch wood. Erannis aurantiaria Hb. and E. defoliaria Cl. also occurred at all altitudes. The former preferred the lower part of the birch wood, and was always present in densities lower than O. autumnata's highest density. Only a few larvae of E. defoliaria were found, without showing any altitudinal preference.

Ch.3 Validity, s.2: Grounds for avoidance, Art.3.2.14

2015 ◽  
Author(s):  
du Plessis Jacques
Keyword(s):  
The Other ◽  
Retroactive Effect ◽  
General Proposition ◽  
Contractual Obligations ◽  
The Moment ◽  
Made In ◽  
Do So

This commentary focuses on Article 3.2.14 of the UNIDROIT Principles of International Commercial Contracts (PICC) concerning the retroactive effect of avoidance of a contract. Under Art 3.2.14, avoidance takes effect retroactively; that is, the contract is regarded as never having existed, and not merely as non-existent from the moment of avoidance. Unfulfilled obligations fall away and performances made in fulfilment of obligations have to be returned, according to Art 3.2.15. However, this is only a general proposition. Where avoidance only relates to certain terms of the contract, the other terms, whether fulfilled or unfulfilled, are left undisturbed, unless it would be unreasonable to do so. This commentary discusses the effect of retroactive avoidance in general, as well as its effect on contractual obligations, including unfulfilled and unaffected obligations and fulfilled obligations.

scholarly journals Control of Cherry Leaf Spot and Cherry Fruit Fly at Sour Cherry

2015 ◽  
Vol 7 (2) ◽  
pp. 250-252 ◽  
Author(s):  
Maria BOROVINOVA ◽  
Vilina PETROVA
Keyword(s):  
Chemical Treatment ◽  
Post Infection ◽  
Leaf Spot ◽  
Sour Cherry ◽  
Fruit Fly ◽  
Treatment Approaches ◽  
Cherry Leaf Spot ◽  
Cherry Orchard ◽  
The Moment ◽  
Made In

The investigations were made in the experimental sour cherry orchard from the Institute of Agriculture, Kyustendil, Bulgaria, during the period 2010-2014, in order to compare conventional and integrated sour cherry protection against cherry leaf spot and cherry fruit fly. Two variants were investigated, with two different treatment approaches for the control of cherry leaf spot and cherry fruit fly. Variant 1 – cherry leaf spot was controlled by protective treatments with dodin and tebuconazole + trifloxystrobin and cherry fruit fly was controlled by treatments with deltametrin and thiacloprid, independently of density. Variant 2 - cherry leaf spot was controlled by post-infection (curative) treatments with tebuconazole + trifloxystrobin and cherry fruit fly was controlled by treatments based on biological threshold: 10-11 cherry fruit fly females caught in traps up to the moment for chemical treatment. It was established that Blumeriella japii can be successfully controlled by post-infection treatments and by this the number of insecticide treatments was reduced. The treatments against cherry fruit fly can be avoided or reduced when the attack control is based on the biological threshold established in the studied area.

scholarly journals On certain correction terms required in the equations for the kinetics of simple hœmolysis

1932 ◽  
Vol 110 (765) ◽  
pp. 1-17 ◽  
Keyword(s):  
Photoelectric Cell ◽  
Photoelectric Current ◽  
Cell Method ◽  
High Tension ◽  
Satisfactory Method ◽  
The Moment ◽  
The Right ◽  
Correction Terms ◽  
Kinetics Of ◽  
Made In

The most satisfactory method hitherto available for the measurement of percentage hœmolysis has been the potassium cell method described in an earlier paper (Ponder and Yeager, 1930). This method, however, has certain limitations and disadvantages, two of which are particularly conspicuous. (i) The galvanometer which records the photoelectric current takes several seconds to deflect, and several seconds more to settle at zero. This determines that no more than four readings of the degree of hœmolysis can be made in a minute, and that only a few points can be obtained on the percentage hœmolysis curve for rapidly hœmolysing systems. Even these points, moreover, are apt to be inaccurate, for lysis is going on during the time taken for the galvanometer to move ; the degree of lysis recorded is thus always greater than that really present at the moment the photoelectric cell first receives the light. The effect is to move the percentage hœmolysis curve over to the right by a distance corresponding to about 0-05 minutes ; this shift is of little consequence if lysis is slow, but may introduce considerable error if it is rapid. (ii) The method is unreliable in the sense that its efficiency depends on factors which are controlled with difficulty and which are liable to vary. Photoelectric fatigue, although usually absent, may appear during any experiment, the voltage of the high tension battery or of the accumulator which supplies the lamp may vary, or the potassium cell may glow as a result of a careless exposure to the light in the interval before the cells are added to the lysin in the chamber. Experience shows that these accidents often happen, and the necessity of being continually on one’s guard against them makes the measurement of percentage hœmolysis much more difficult than would appear at first sight.

scholarly journals Menelisik Hukum Jual Beli Kredit Melalui Kajian Tafsir Al-Quran

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Khozainul Ulum
Keyword(s):  
Payment System ◽  
The Other ◽  
Easy Access ◽  
Purchasing Power ◽  
Human Beings ◽  
The Future ◽  
Economic Needs ◽  
The Stability ◽  
The Moment ◽  
Made In

In fulfilling the needs, human beings tend to do various ways and always looking for ease. In the context of the fulfillment of economic needs, for example, not everyone can get easy access to be able to get the needs. The purchasing power of each person always refers to the stability of the amount of income earned every day or every month. Therefore, it is not surprising that payment system in transaction of buying and selling that try to make easy for consumer to get what is wanted, that is credit payment. In Islam, payments in credit transactions are known as nasīah. This paper will trace the arguments of the Quran that are related to the payment of sale and purchase on credit.  From the Quranic interpretation of sura al-Baqarah verse 282 and 283 above with respect to the transaction on credit, it can be summarized as follows. First, the transaction on credit in Islam is not forbidden and not makruh. In other words, it is allowed even though the price of goods sold in credit is more expensive than the price in cash. Second, in a transaction on credit, it is ordered to make record and witness to the requierments and conditions of the transaction. The purpose of these records and testimony is to safeguard the rights of each transactor and to avoid disputes in the future. In this case, ulama have difference on the form of such recording and testimonies. One side believes that the order is obligatory (wajib), and the other side thinks it sunnah. According to me, after seeing the purpose of record and testimony of the above transactions, the record and testimony in the transaction is wajib.Third, transaction made in cash (yadan bi yadin), according to the author, is also required to record and testimony. This is a form of caution, because at the moment there are many disputes in transactions that arise in the community, even though they have done the recording and testimony. Fourth, note of treaty and the receipts included in each transaction at the present have an important meaning to safeguard the rights and obligations of each party conducting the transaction. Moreover, note of treaty and receipt are a valid and concrete evidence explaining the truth of the transaction. Keywords: Credit Sale, Quranic Interpertation Approach

scholarly journals Long-term Deflections in Balanced Cantilever Prestressed Concrete Bridges

2009 ◽  
Vol 4 (1) ◽  
pp. 22
Author(s):  
Eltayeb Hassan Onsa ◽  
Elsafi Mohamed Adam ◽  
Abdalla Khogali Ahmed ◽  
Mohamed Elmontasir Elbagir
Keyword(s):  
Prestressed Concrete ◽  
Concrete Bridges ◽  
Live Load ◽  
Prestressed Concrete Bridges ◽  
Prestressing Force ◽  
Load Tests ◽  
The Moment ◽  
Aashto Lrfd ◽  
Made In

Long-term deflections in balanced cantilever prestressed concrete bridges are reviewed. Burri and Shambat Bridges are taken as cases study to calculate long-term deflection. The two bridges were constructed at Khartoum State in the years 1972 and 1962, respectively. Due to the shortage of the basic data regarding the two bridges the AASHTO-LRFD is used to estimate and calculate the missing data in the two bridges. The Moment Area method is used to calculate the long-term deflections due to the dead load, live load and prestressing force. The calculated long-term deflections are compared with measured live load deflections obtained from load tests made by a Chinese contractor requested to evaluate the two bridges. Remarkable differences between theoretical and measured deflection at the end of cantilevers are encountered. The differences are probably due to the basic assumptions made in the formulations of deflection calculations. Some adjustments in the long-term deflection formulae are suggested to bring the calculated deflections in compatibility with measured ones.

scholarly journals Optimasi Dimensi Connecting Rod Al2024 dan Tulangan Baja 4340 pada Kawasaki Ninja 150 R Menggunakan ANSYS

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Alfan Ekajati Latief ◽  
Nuha Desi Anggraeni
Keyword(s):  
Maximum Stress ◽  
Fuel Efficiency ◽  
Stress And Strain ◽  
Connecting Rod ◽  
Optimal Reinforcement ◽  
Steel Material ◽  
The Moment ◽  
Al 2024 ◽  
Efficiency Engine ◽  
Made In

ABSTRAKConnecting rod berfungsi menghubungkan piston ke crankshaft, sistem ini membentuk mekanisme sederhana yang mengubah gerak lurus menjadi gerak melingkar ataupun sebaliknya. Umumnya connecting rod dirancang berbenruk I agar kuat dan ringan dengan material baja. Pengurangan massa pada connecting rod dapat mengurangi momen inersia engine, meningkatkan performa dan fuel efficiency engine. Penelitian ini bertujuan untuk mendapatkan dimensi optimum connecting road menggunakan material Al 2024 dan tulangan baja 4340.Dimensi optimum harus dapat menahan tegangan dan regangan maksimum yang terjadi pada connecting rod ketika menerima beban tekan dan tarik. Penelitian dilakukan dengan melakukan varisi dimensi profil I dan bentuk tulangan dengan dimensi lain menyesuaikan spesifikasi connecting rod Kawasaki Ninja 150 R. Hasil penelitian memperlihatkan bahwa connecting rod dengan profil I, bentuk tulangan webbing merupakan tulangan paling optimal dengan ketebalan 8 mm dengan berat total 0,12 Kg.Kata kunci: connecting rod, tulangan baja, Al2024, ANSYSABSTRACTThe connecting rod serves to connect the piston to the crankshaft; this system forms a simple mechanism that converts straight motion into circular motion or vice versa. Generally, connecting rods are designed to be made in order to be strong and lightweight with steel material. Reducing the mass of the connecting rod can reduce the moment of engine inertia, improve the performance and fuel efficiency engine. This study aims to obtain the optimum dimensions of the connecting road using Al 2024 material and steel reinforcement 4340. The optimum dimension must be able to withstand the maximum stress and strain that occurs in the connecting rod when receiving compressive and tensile loads. The study was conducted by varying the dimensions of profile I and shape of reinforcement with other dimensions adjusting the specifications of the connecting rod Kawasaki Ninja 150 R. The results showed that the connecting rod with profile I, the form of webbing reinforcement was the most optimal reinforcement with a thickness of 8 mm and total mass 0,12 kg.Keywords: connecting rod, reinforcement steel, Al2024, ANSYS.

scholarly journals Teaching Case: Social Entrepreneurs and Impact Investors: A Match Made in Heaven?—Case Study of Le Champignon de Bruxelles

2021 ◽  
Vol 13 (20) ◽  
pp. 11467
Author(s):  
Freek Van Doninck ◽  
Johanna Vanderstraeten ◽  
Ine Paeleman ◽  
Luc Van Liedekerke
Keyword(s):  
Business Model ◽  
Turning Point ◽  
Strategic Choices ◽  
Pragmatic Approach ◽  
Social Entrepreneurs ◽  
Teaching Case ◽  
The Moment ◽  
Made In ◽  
Do So

This teaching case addresses the strategic choices of social entrepreneurs and the issues they face in search of funding. In the heart of Europe’s capital, Brussels, two aspiring entrepreneurs founded Le Champignon de Bruxelles to produce exotic mushrooms. Being true social entrepreneurs, they use a recycled substrate—brewery dredge—to do so, as such, minimizing the distance the mushrooms travel from farm to plate. After the typical “entrepreneur-in-the-basement” start, they are now at a turning point. They established themselves as a serious player in the market, producing over 6000 kg of mushrooms every month. This journey, however, did not come without its challenges. Along the way, they struggled to reconcile their idealistic mindset with the realities of the economic system and adopted a more pragmatic approach in response. At the moment, they are at a decisive moment in the company’s development and are contemplating whether their current business model should be diversified and internationalized.

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