Honey Comb

Top PDF Honey Comb:

Strength And Behavior Analysis Of Honey Comb Sandwich Composite Structure

Strength And Behavior Analysis Of Honey Comb Sandwich Composite Structure

Abstract: Composites are emerging as realistic alternatives to the metal alloys in many applications like automobiles, marine, aerospac e applications, sports goods, etc. Fiber composites offer many advantages such as low specific gravity, tensile strength and modulus, compressive strength and modulus, better fatigue strength, etc. Due to the low specific gravity the strength weight ratio and modulus weight ratio of these composite materials are markedly superior to those of metallic materials. In this work it is concerned about the flexural behavior of honey comb sandwich composite plate. Jute and glass fiber as reinforcement, general purpose resin as matrix and coir pith, saw dust as fillers are used for the fabrica tion of composite plate. Corrugated structured glass fiber composite sheet, jute fiber sheet and glass jute hybrid composite sheets are prepared by ha nd layup technique. Two corrugated plates are binded together and flat face sheets are winded over it. Then resin is applied over it and allowed to cure. Thus the honey comb sandwich plate is fabricated. The prepared samples are tested in computerized universal testing machine with four point flexu ral fixture. Load vs. displacement curves are plotted and were recorded with digital camera. The failure pattern of the composites was analyzed and the results were compared. The samples are tested as empty and filled with saw dust and coconut coir. From the results it is observed that the composite plate filled with saw dust and coconut coir shows better flexural strength of up to 18% than the empty composite plate.

8 Read more

Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weight Helicopter

Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weight Helicopter

----------------------------------------------------------------------***--------------------------------------------------------------------- ABSTRACT: The continuous growth of composite materials honey comb sandwich panel for Advance light weight helicopter in used Composite materials. The advance composite materials made and Research and development light weight composites materials these materials combined in used materials Kevlar -1226, Carbon – 801, and Glass-7781 in used three materials in made by new Composite materials. This is composite material is main Properties light weight materials but Developments and manufacturing cast of composite material is very high, but those composite is very smart Applications in higher level of Industry like aircraft industry, Aeronautical Industry, Aerospace Industry, etc. the composite materials is found out the Mechanical Properties and physical properties and other some of properties fined. This is composite material is used in generalized small size of Components of helicopters, Aircraft, airlines vehicles in used the composite materials is density ( kg/m 3 and other physical properties find of those composite materials.

5 Read more

Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weight Helicopter

Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weight Helicopter

----------------------------------------------------------------------***--------------------------------------------------------------------- ABSTRACT: The continuous growth of composite materials honey comb sandwich panel for Advance light weight helicopter in used Composite materials. The advance composite materials made and Research and development light weight composites materials these materials combined in used materials Kevlar -1226, Carbon – 801, and Glass-7781 in used three materials in made by new Composite materials. This is composite material is main Properties light weight materials but Developments and manufacturing cast of composite material is very high, but those composite is very smart Applications in higher level of Industry like aircraft industry, Aeronautical Industry, Aerospace Industry, etc. the composite materials is found out the Mechanical Properties and physical properties and other some of properties fined. This is composite material is used in generalized small size of Components of helicopters, Aircraft, airlines vehicles in used the composite materials is density ( kg/m 3 and other physical properties find of those composite materials.

5 Read more

Impact Analysis on Honey Comb Structured Go Kart Bumper Using Ansys R19 1

Impact Analysis on Honey Comb Structured Go Kart Bumper Using Ansys R19 1

The parameters of automotive front bumper such as shape and impact condition have been studied to improve the crashworthiness and passenger’s safety. The simulation and analysis of bumper done beneath standard-velocity impact as per the standards of Federal motor vehicle safety (FMVSS No. 581) and Insurance Institute for Highway Safety (IIHS).The strength of the bumper elastic mode is investigated and premeditated with energy absorption and impact force in most deflection state of affairs. Similar bumper fabricated from Resinasepoxi material with honeycomb like structure are simulated to determine the distortion forces, impact force, stress diversities and distribution and energy-engrossment behaviour, these attributes are compared with each other to find best fit on safety parameters. The results show that bumper with internal honeycomb like structure can minimize the bumper distortion forces, impact force, stress diversion and distribution, energy-engrossment behaviour, maximize the elastic strain energy. In addition, the effect on passenger’s compartment in the impact behaviour is also examined which indicated that bumpers having honey comb like structure internally have better standards regard safety. FURTHER INVESTIGATION:

5 Read more

Abstract: In this paper a new design of elliptical air hole silica with honeycomb Photonic crystal fiber is

Abstract: In this paper a new design of elliptical air hole silica with honeycomb Photonic crystal fiber is

Neils Asger Mortensen and Martin Dybendal Nielsen,Jacob Riss folkenberg, et al In this paper, it is experimentally demonstrated,how index guiding silica core can be formed by fluorine doping of honey comb lattice.[1] S.S.Misha and Vinod kumar singh In this paper, hollow core honey comb PCF are analyzed by using Full Vector Finite Element Method (FV-FEM). In hollow core honey comb PCF by removing 6 air holes in cladding region, low confinement loss of 0.1*10 -4 is achieved at wavelength of 1.55 μm.[2] Jingyuan wang,chun jiang et al proposed a high birefringence photonic band gap fiber with elliptical holes in cladding and circular air hole in core. In result it is found the high birefringence of 10 -3 order higher than conventional PCF.[3]

5 Read more

Download
			
			
				Download PDF

Download Download PDF

Until now, the properties of honey have been defined based exclusively on the content of plant components in the nectar of given plant. We showed that apalbumin1, the major royal jelly (RJ) protein, is an authentic and regular component of honey. Apalbumin1 and other RJ proteins and peptides are responsible for the immunostimulatory properties and antibiotic activity of honey. For the quantification of apalbumin1, an enzyme-linked immunosorbent assay (ELISA) was developed using polyclonal anti-apalbumin1 antibody. The method is suitable for honey authenticity determination; moreover it is useful for detection of the honey, honeybee pollen and RJ in products of medicine, pharmacy, cosmetics, and food industry, where presences of these honeybee products are declared. Results from the analysis for presence and amount of apalbumin1 in honeys will be used for high-throughput screening of honey samples over the world. On the basis of our experiments which show that royal jelly proteins are regular and physiologically active components of honey we propose to change the definition of honey (according to the EU Honey Directive 2001/110/EC) as follows: Honey is a natural sweet substance produced by honey bees from nectar of plants or from secretions of plants, or excretions of plant sucking insects, which honey bees collect, transform by combining with major royal jelly proteins and other specific substances of their own, deposit, dehydrate, store and leave in the honey comb to ripen and mature.

9 Read more

Development of Honey comp Structure with Composite Material

Development of Honey comp Structure with Composite Material

Honeycomb structures are natural or man-made structures that have the geometry of a honey comb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The honey comb structure have more stronger than other structure. It is because of the hexagonal is most efficient, the compressive characteristics of the shape allow it to be one of the strongest structures in the world The natural fiber reinforced polyester resin composite find application in the field of automobile and air craft’s. Honeycomb structure composite with polyester as matrix with varying weight percentages of coconut shell powder were fabricated and studied. The experimental investigation should that the mechanical and physical properties of honeycomb structure in composite material have high strength than other structures. A common aim of material scientist and engineers is to create materials with the greatest strength and the minimum weight and minimum amount of materials. The composite material of honeycomb sandwich structure are often used to achieve this outcomes. This structure with composite material are best to use the applications of aerospace, automotive, housing , packaging spot-equipment and other industries.

5 Read more

Comparative Study Of Seismic Behavior Of Honeycomb Structure With Conventional Structure By Using Staad Pro

Comparative Study Of Seismic Behavior Of Honeycomb Structure With Conventional Structure By Using Staad Pro

The scope of the honey comb structure or any biomemitic structure is that it efficiently uses land. The conventional structures are very heavy structures made up of bricks, concrete and steel. The weight of the structure is very large. Heavier is the structure greater is the damaged cause by earthquake. Steel structures and specifically honey comb structures are made up of steel exoskeleton which is a shear solid surface. This makes the structure resistant to lateral loads and the vertical loads due to inertia is less as the self-weight will be less, less moment is developed. During earthquakes it has been seen that tall structures are very vulnerable to earthquakes. The increase in the construction and demand of tall structures has raised lot of questions on the environmental safety. It is seen that many tall structures are not as good in strength as they are aesthetically good. This damage to the environmental system can be minimized if the structure is properly designed and proper ductile and damping to the structure is given. The new honey comb structures can be energy efficient and earthquake resistant to great extent.

5 Read more

Exploring the potential of non timber forest products: the case of Ethiopian honey export to Denmark

Exploring the potential of non timber forest products: the case of Ethiopian honey export to Denmark

Beekeeping is a promising non-farm activity for the rural households in Ethiopia. It contributes to the incomes of households and the economy of the nation. The direct contribution of beekeeping includes the value of the outputs produced such as honey, bee wax, queen and bee colonies, and other products such as pollen, royal jelly, bee venom, and propolis in cosmetics and medicine (Gezahegn, 2001). It also provides an employment opportunity in the sector. The exact number of people engaged in the honey sub-sector in Ethiopia is not well known. However, it is estimated that around one million farm households are involved in beekeeping business using the traditional, intermediate and modern hives (Gidey and Mekonen, 2010). It could also be observed that a large number of people (intermediaries and traders) participate in honey collection and retailing (at village, district and zonal levels), and thousands of households are engaged in Tej-making in almost all urban areas, also hundreds of processors are emerging and exporters are also flourishing (Beyene and David, 2007). Honey and beeswax also play a big role in the cultural and religious life of the people of Ethiopia (Gidey and Mekonen, 2010).

39 Read more

Study on the Quality of Honey Collected from Three Floral Sources of Bangladesh

Study on the Quality of Honey Collected from Three Floral Sources of Bangladesh

The corresponding number of freeze-dried reagent microwells was opened and placed them in the Heatsensor at 40°C. Directly 200 µl of the honey sample tube solution was added to the lyophilised receptor, the samples were mixed 5-10 times by pushing up and down the plunger of the micropipette. Incubation was done for 5 minutes at 40°C. A dipstick (with the arrows downwards) was dipped into the vial. The dipstick was making contact with the liquid. The incubation was continued for 15 minutes at 40°C. The dipstick and the filter were removed directly. The samples were interpret within 10 minutes and the coloured lines as shown in the figure or perform an instrumental reading.

9 Read more

Phase reversal of vibratory signals in honeycomb may assist dancing honeybees to attract their audience

Phase reversal of vibratory signals in honeycomb may assist dancing honeybees to attract their audience

Vibratory comb signals emanating from a dancing bee are certainly not the only clue used by dancers to advertise their presence. A dancing bee raises her temperature (Stabentheiner and Hagmüller, 1991), which would make her immediately identifiable to her nest mates that are close to her but not to those that are remote. The increased temperature of the dancer would also increase the rate at which volatile substances accumulated at the food site would diffuse from her body into her neighbourhood. Such odours would be spread relatively broadly by diffusion and by air currents generated by the vibrating wings. However, neither a temperature increase nor the diffusion of odours would explain the distribution of the recruited bees that has been recorded. Indeed, odour diffusion would be expected to be concentrated behind the animals because air currents from the vibrating wings are directed there and not to the side and in

10 Read more

 MECHANISM OF ANTIBACTERIAL ACTION OF HONEY ON PATHOGENIC WOUND BACTERIAL STRAINS: A PROTEOMIC ANALYSIS

 MECHANISM OF ANTIBACTERIAL ACTION OF HONEY ON PATHOGENIC WOUND BACTERIAL STRAINS: A PROTEOMIC ANALYSIS

It is definitely worthy to consider honey as a promising future antibiotic to be tested and studied. Rediscovering honey as a natural remedy for wound pathogens proved its effectiveness on antibiotic resistant strains of bacteria including MRSA and PA. In this research, we tried to focus more on whether honey when combined with the antibiotic has synergistic, antagonistic, additive effect on the isolates under study and we made some assumptions and conclusions of the possible mechanism of action that the honey could have exerted on them. Certain tests were conducted for that purpose as well, and although they did not specify the exact mechanism of it, they helped in ruling out some of the mechanisms that are most commonly attributed to honey, leaving this field open for other possible options to be further studied.

11 Read more

INTRUSION DETECTION THROUGH HONEY POTS

INTRUSION DETECTION THROUGH HONEY POTS

Honey pots can run any operating system and any number of services. The configured services determine the vectors available to an adversary for compromising or probing the system. A high-interaction honey pot simulates all aspects of an operating system. A low-interaction honey pots simulates only some parts, for example the network stack. A high-interaction honey pot can be compromised completely, allowing an adversary to gain full access to the system and use it to launch further network attacks. In contrast, low- interaction honey pots simulate only services that cannot be exploited to get complete access to the honey pot. Low-interaction honey pots are more limited, but they are useful to gather information at a higher level, e.g., learn about network probes or worm activity. They can also be used to analyze spammers or for active countermeasures against worms.

8 Read more

Antimicrobial activity of different honey samples and their protein estimation

Antimicrobial activity of different honey samples and their protein estimation

5. MIC determination-The MIC determination assay was performed for the better honey sample obtained from the plant Vachellia nilotica honey achellia nilotica. MIC assay was performed against two clinically important selected bacteria, Pseudomonas aeruginosa and Staphylococcus aureus. Spectrophotometric assay for MIC was determined by using sterile 12 well round bottomed commercially available microtitre plates. 100 µl of bacterial culture was inoculated to 1900 µl of test honey in each well at different concentrations (12 dilutions tested). Control wells were loaded with nutrient broth only by considering as negative control. The plates were incubated while shaking at 150 rpm for 24 h. The optical density was determined by the method given by Patton et al. (2006). In brief, the OD was obtained at T0 and after T24 at 600 nm. Following the procedure of Sherlock et al. (2011) the percent of inhibition of growth was determined.

6 Read more

Honey Production and Marketing in Ethiopian

Honey Production and Marketing in Ethiopian

[1]. It is characterized mainly by forest beekeeping that is common in the forest covered the south and southwest Ethiopia and backyard beekeeping which is practiced in the majority of the country [2]. Honey hunting is also common in few remote west and southwest parts of the country among traditional communities. Traditional beekeeping is mostly practiced with different types of traditional hives that are very much diversified in shape, volume and the materials used depending on the cultural differences and the local materials available for construction [3]. Reports indicate that the colonies in traditional beehives account for about 97% of the total hived honeybee population [8,10,11]. The productivity of traditional hives is extremely low and the average yield is only about 5–8kg/per colony/per annum [3]. However, with this existing practices the annual honey production in the country is increasing and has reached quite higher than 53 thousand tons in 2012 [8,9,10,11,12].

5 Read more

Reclassification of Pasteurella gallinarum, [Haemophilus] paragallinarum, Pasteurella avium and Pasteurella volantium as Avibacterium gallinarum gen. nov., comb. nov., Avibacterium paragallinarum comb. nov., Avibacterium avium comb. nov. and Avibacterium

Reclassification of Pasteurella gallinarum, [Haemophilus] paragallinarum, Pasteurella avium and Pasteurella volantium as Avibacterium gallinarum gen. nov., comb. nov., Avibacterium paragallinarum comb. nov., Avibacterium avium comb. nov. and Avibacterium volantium comb. nov.

The strains represented by the three serovars and two biovars of [ Haemophilus ] paragallinarum analysed by 16S rRNA gene sequence comparison formed a single sub- group within the Avian 16S rRNA-group of Pasteurellaceae together with the species Pasteurella gallinarum, Pasteurella avium, Pasteurella volantium and the unnamed species A of Pasteurella, showing between 96?8 and 98?1 % simila- rity. The monophyly of the species [Haemophilus] para- gallinarum as well as Pasteurella gallinarum and Pasteurella sp. A was unsupported by bootstrap, parsimony and neighbour-joining analysis. The species Pasteurella galli- narum was even polyphyletic by maximum-likelihood analysis. The explanation for this is probably that 16S rRNA gene sequence comparison is insufficient to resolve all species. This issue is well known for all species (Stackebrandt & Goebel, 1994; Christensen et al., 2002a). A similar comb-like topology has previously been shown for some taxa of Mannheimia (Blackall et al., 2001) and Actinobacillus equuli subsp. equuli and subsp. haemolyticus (Christensen et al., 2002a).

10 Read more

Evaluation of Total Antioxidant Activity of Different Floral Sources of Honeys Using Crosslinked Hydrogels

Evaluation of Total Antioxidant Activity of Different Floral Sources of Honeys Using Crosslinked Hydrogels

Honey is a sweet substance stored in honeycomb by bees, which mix nectar collected from plants, exuded from plant cells or excreted by insects with the secretion of bee salivary glands. Honey not only is a healthy food with high nutritional value but also has a variety of biological activities [6-8]. Honey has long been used as food, but its antioxidant function has only recently been discovered. The antioxidant strength of honey depends on the source of the honey, season, environmental factors, and the process of honey production [9,10]. Antioxidant components in honey include flavonoids and phenolic acids, enzymes (glucose oxidase, catalase), ascorbic acid, Maillard reaction products, carotenoids, organic acids, amino acids and proteins. These natural antioxidants have a wide range of biological activities such as antibacterial, anti-inflammatory, anti-allergic, anti-thrombosis and vasodilation functions [11,12].

9 Read more

Physicochemical and Microbiological Quality of Selected Commercial and Traditional Honey in Klang Valley Market, Malaysia

Physicochemical and Microbiological Quality of Selected Commercial and Traditional Honey in Klang Valley Market, Malaysia

Honey is originated by bees (Apis mellifera) from the nectar of flowers. It has a very sweet taste and viscous syrup texture. Honey is teeming with excellent nutritional values and health benefit consequences [1]. This could be due to the presence of about 200 substances considered the essential part of traditional medicine. The chemical composition of honey is complex, consists of sugars, vitamins, minerals, proteins, flavonoids, enzymes phenolic acids, 5- hydroxymethylfurfural (HMF) and volatile compounds [2]. These compositions can be influenced by different factors such as floral types, geographical areaand entomological source [3]. Honey provides numerous phenolic compounds, which are excellent sources of

6 Read more

Caste dependent sleep of worker honey bees

Caste dependent sleep of worker honey bees

Honey bee foragers follow very strong diurnal rhythms of activity, including visiting flowers and dance communication (von Frisch, 1967). Lindauer (Lindauer, 1952) observed one pollen forager continuously for 2 days and, although he did not distinguish sleep from a state of being ‘Müßig’ (idle), he found that the forager rested more at night than during the day (although grooming was included in this measure). Kaiser (Kaiser, 1988) followed up on this observation with extensive studies that consistently supported a circadian sleep:wake cycle of experimentally isolated foragers. Sauer and Kaiser (Sauer and Kaiser, 1995) confirmed that pollen foragers also exhibit circadian rest within an observation hive. The younger nurse bees, in contrast, do not show diel rest–activity rhythms (Lindauer, 1952; Crailsheim et al., 1996; Moore et al., 1998), although they do show non-circadian sleep signs (Sauer et al., 1999). Spangler (Spangler, 1972) reported no circadian activity in a freshly eclosed and isolated worker and contrasted this with an older worker, which exhibited circadian activity cycles. Moore et al. (Moore et al., 1998) recorded various in-hive tasks, all of which were performed arrhythmically except ‘resting’, which increased at night relative to the day as workers aged. Sauer et al. (Sauer et al., 1998; Sauer et al. 1999) specifically examined sleep signs within developing adults living in isolation and found an increasing circadian organization to the timing of sleep as the bees aged.

13 Read more

COLLISION ANALYSIS OF AN AUTOMOBILE BUMPER USING FEA

COLLISION ANALYSIS OF AN AUTOMOBILE BUMPER USING FEA

Hence the crash analysis of the bumper is done and we observe a change of 25.62% less deformation in the case of a Composite bumper which is observed to be a positive change when taken into existence. Also, we observe a change of 48% less deformation in the case of a Honey comb- Hybrid structure bumper which is observed to be a positive change when taken into existence.We can fabricate the Composite Bumper using Hand Lay-up technique. In Hand lay-up, liquid resin is applied to the mold and then fiber glass is placed on the top. A roller is used to impregnate the fiber with resin. Another resin and reinforcement layer is applied until a suitable thickness builds up. It is very flexible process that allows the user to optimize the part by placing different types of fabric and mat materials. Because the reinforcement is placed manually, it is also called the hand lay-up process. Though this process requires little capital, it is labor intensive.

6 Read more

Show all 1238 documents...