Excessive and continuous use of inorganic fertilizers can pollute the environment. Therefore, to support sustainable agriculture, other alternatives are needed meet nutrients, namely organic fertilizers, such as vermicompost fertilizer. This study used sawdust, banana weevil, cow dung, vegetable waste feed media for cultivation earthworms. aims determine content N, P, K, C-org, C/N, pH in ferti...

We introduce RS-vector machines (RS-VMs) as a canonical form of vector machines. They are based on vector operations called repeat and stretch. Repeat enlarges a vector (a1 , a2 , ..., am) to (a1 , a2 , ..., am , a1 , a2, ..., am) and stretch enlarges (a1, a2, ..., am) to (a1, a1, a2, a2, ..., am, am), when the expansion factor d(m)=2. It is shown that we can change the power of RS-VMs dependin...

This study addresses the development of a compact reactor for oxidative steam-reforming of methanol (OSRM) to produce hydrogen in autothermal mode for fuel cells. The string reactor uses catalytically active brass wires with a diameter of 500 mm placed in parallel into a tube. The micro-channels in the reactor for gases are formed between the wires presenting hydrodynamics similar to the one in...

OBJECTIVE To determine the effect of exposure to metal dusts, fumes and high temperature levels among brass workers in comparison to a control group. STUDY DESIGN Analytical cross-sectional study. METHODOLOGY One hundred and fifty four brass workers were matched for age with 154 controls selected from the local population. An interviewer-administered questionnaire was used to determine the ...

Inductively coupled plasma-optical emission spectroscopy (ICP-OES) was used to determine the bulk metal elemental composition of 62 modern bronze sculptures cast in Paris in the first half of the twentieth century from the collections of The Art Institute of Chicago and the Philadelphia Museum of Art. As a result, a comprehensive survey of the alloy composition of the sculptures of many promine...

Improvement of die life in the hot forging of brass alloys is considered vital from both technical and economical points of view. In this research, pin-ondisc tests were carried out at a range of temperatures to evaluate the influence of plasma nitriding and duplex nitriding-physical vapour deposition (PVD), including TiN-TiAlN and TiN-TiAlN-CrAlN coatings, on the tribological properties of AIS...

In this paper a system for storing and retrieving imaged multimedia documents by content is described. This system is being developed within the Esprit project STRETCH (STorage and RETrieval by Content of imaged documents). The core of STRETCH system is a powerful Archiving and Retrieval Engine, based on a structured document representation and capable of activating appropriate methods to chara...

Brass-matrix composites reinforced with 40 and 60 vol.% of Ni59Zr20Ti16Si2Sn3 glassy particles were produced by powder metallurgy. The crystallization behavior and the temperature dependence of the viscosity of the glass reinforcement were studied in detail to select the proper sintering parameters in order to avoid crystallization of the glassy phase during consolidation. The brass-glass powde...

Despite its widespread use, the Coale–Demeny model life table system does not capture the extensive variation in age-specific mortality patterns observed in contemporary populations, particularly those of the countries of Eastern Europe and populations affected by HIV/AIDS. Although relational mortality models, such as the Brass logit system, can identify these variations, these models show sys...

Clinical isolates of meticillin-resistant Staphylococcus aureus (MRSA), Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, Candida albicans and Mycobacterium tuberculosis (MTB) were tested against copper (Cu) and its alloys. Stainless steel and polyvinylchloride (PVC) were used as controls. The amount of Cu required to inhibit test isolates at room temperature (24 degrees C...