427 research outputs found

    Research Progress of Anti-tumor Active Ingredients in Dandelion

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    As a traditional Chinese herb, dandelion, containing complicated activeingredients which includes polysaccharide, flavonoid, terpene, pigment,phytosterol, coumarin, organic acid and etc, plays significant roles invarious physiological activities in organisms. The active ingredientsgenerally interfere in signal transduction of cancer cells, regulate cellcycle and apoptotic protein expression, inhibit cancer cells proliferationand migration and etc, which effectively restrains tumor developmentand deterioration. This article summarizes the anti-tumor mechanism offive active ingredients in dandelion through paper reading which providesthoughts and references for anti-tumor research

    The Effect of Site Trust on Trust in the Sources of Online Consumer Review and Trust in the Sources of Consumer Endorsement in Advertisement

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    Consumer endorsements have along been used as an advertising strategy, and now, it is also easy to see consumer endorsements in online shopping sites. A positive Online Consumer Review (OCR) is a consumer endorsement in the web site. Although the sources of both OCR and consumer endorsement in advertisement (CEA) are typical consumers, trust in the source of OCR could be perceived differently from trust in the source of CEA. Trust in the information source ensures that consumers comfortably accept the endorsement. In e-commerce, how is a consumer’s judgment involving trust based on endorsements made by other consumers? This experimental study investigates whether trust in a web site is transferred to trust in the source of OCR and CEA. Moreover, it also tests which source credibility could be more influenced by site trust

    RESPON PERTUMBUHAN EKSPLAN ANGGREK BULAN (Phalaenopsis amabilis. L) TERHADAP PEMBERIAN NAPHTALENE ACETIC ACID (NAA) DAN AIR KELAPA SECARA IN VITRO

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    This study was conducted in the biotechnology laboratory of the Faculty of Agriculture, Riau Islamic University, Pekanbaru. This study was conducted for five months from January to March 2017. The purpose of this study was to examine the effect of the growth response of an orchid butterfly plant on the interaction between NAA and coconut water using In-Vitro. This study used a Completely Randomized Design (RAL) factorial  the RAL (Randomized ich consists of two factors. The first factor was NAA consisting of 4 levels, i.e 0, 0.1 ppm, 1.0 ppm, and 10,0 ppm, and the second factor was Coconut Water which also consisted of 4 levels, i.e 30%, 60%, and 90%. With 3 repetitions, the parameters observed: percentage of live explants (%), percentage of explants form shoots (%), number, percentage of explants that make up the root (%), explant form callus (%), shoot age (day), and the percentage of explant form plantlets (%). The last observational data were statistically analyzed and continued with BNJ advanced test at a 5% level. As a result, the interaction of NAA and coconut water affected the percentage of explant root and the percentage of explant form callus with the best concentration of 10 ppm NAA. The provision of coconut water had a significant effect on the number of shoots, the percentage of an explant from the roots shoot emergence, explant percentage forming plantlets on moth orchids with a concentration of 30% Coconut water/L media

    Pengurusan Taman Kinabalu Sebagai Tapak Warisan Dunia

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    The purpose of this study was to identify the management carried out by Kinabalu Park especially in terms of conservation. This is due to the fact that there are still potential explosives in Kinabalu Park. The researcher used qualitative and quantitative methods by conducting fieldwork, interviewing 4 informants in Kinabalu Park management field and distributing questionnaires as much as 300 sets. The impact of this study has provided useful information to the surrounding community to understand the goals of Taman Kinabalu to achieve with the surrounding community

    PENGARUH NAA DAN BAP TERHADAP PERTUMBUHAN CIPLUKAN (Physalis angulate L.) SECARA IN-VITRO

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    ABSTRACT The purpose of this study was to determine the interactions and main effects of NAA and BAP hormones on the growth of Ciplukan (Physalis angulata L.). The design used in this study is a complete random design (CRD) which consists of two factors. The first factor is N (NAA) which consists of 4 levels, namely: without treatment, 0.1, 1, and 10 mg / l while the second factor is B (BAP) consisting of 4 levels, namely: without treatment, 0.1, 1 and 10 mg / l. The parameters observed were the percentage of hypocotyl explants forming callus, the age of callus appearing, the number of shoots, and the percentage of hypocotyl explants forming roots. The observational data is then statistically analyzed, if the F count is greater than the F table then proceed with the BNJ test at the 5% level. The results showed that the interaction of NAA and BAP gave a significant effect on the age of callus with the best treatment was the administration of 0.1 mg / l NAA and mg / l BAP 1 (N1B2). The main effect of NAA was significantly on the age of callus with the best treatment of 1 mg / l NAA (N2). The main effect of BAP was significantly on the age of callus with the best treatment 1 mg / l BAP (B2) and the percentage of hypocotyl explants forming roots with the best treatment without BAP administration (B0). Keywords: Ciplukan, NAA, BA

    From Marxan to management: ocean zoning with stakeholders for Tun Mustapha Park in Sabah, Malaysia

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    Tun Mustapha Park, in Sabah, Malaysia, was gazetted in May 2016 and is the first multiple-use park in Malaysia where conservation, sustainable resource use and development co-occur within one management framework. We applied a systematic conservation planning tool, Marxan with Zones, and stakeholder consultation to design and revise the draft zoning plan. This process was facilitated by Sabah Parks, a government agency, and WWF-Malaysia, under the guidance of the Tun Mustapha Park steering committee and with support from the University of Queensland. Four conservation and fishing zones, including no-take areas, were developed, each with representation and replication targets for key marine habitats, and a range of socio-economic and community objectives. Here we report on how decision-support tools informed the reserve design process in three planning stages: prioritization, government review, and community consultation. Using marine habitat and species representation as a reporting metric, we describe how the zoning plan changed at each stage of the design process. We found that the changes made to the zoning plan by the government and stakeholders resulted in plans that compromised the achievement of conservation targets because no-take areas were moved away from villages and the coastline, where unique habitats are located. The design process highlights a number of lessons learned for future conservation zoning, which we believe will be useful as many other places embark on similar zoning processes on land and in the sea

    Information Overload and its Consequences in the Context of Online Consumer Reviews

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    An online consumer review is the information including experiences, evaluations and opinions on products from the consumer perspective. An online consumer review plays two roles - informant and recommender. Considering two factors of review structure (the number of reviews and review type), this study analyzes the effect of online consumer reviews on consumers’ information processing depending on their levels of involvement. Generally, more positive reviews seem better from the perspective of online consumer reviews as recommenders. However, from the perspective of online consumer reviews as information providers, consumers may be confronted with too much information when a large number of reviews are offered, which results in information overload. We investigate when information overload occurs in the context of online consumer reviews, what strategies against the information overload consumers use depending on their levels of involvement, and how the product attitude and purchasing intention are changed. Our findings have implications for online sellers in terms of how to manage online consumer reviews contents

    Pengaruh Pemberian NaCl dan Legin terhadap Pertumbuhan dan Produksi Kacang Tanah (Arachis hypogaea L.)

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    Tujuan penelitian ini adalah untuk mengetahui intreraksi dan pengaruh utama pemberian NaCl dan Legin terhadap pertumbuhan serta produksi tanaman Kacang Tanah. Rancangan yang digunakan adalah rancangan acak lengkap (RAL) secara faktorial yang terdiri dari dua faktor. Faktor pertama adalah konsentrasi NaCl yang terdiri dari 4 taraf perlakuan dan faktor kedua adalah dosis legin yang terdiri dari 4 taraf sehingga diperoleh 16 kombinasi perlakuan, dimana setiap perlakuan diulang sebanyak 3 kali sehingga terdapat 48 satuan percobaan. Data hasil pengamatan terakhir dianalisis ragam (ANOVA) diuji lanjut dengan beda nyata jujur (BNJ) pada taraf 5%. Hasil penelitian yang telah dilakukan dapat disimpulkan sebagai berikut: interaksi pemberian NaCl dan Legin memberikan pengaruh nyata terhadap jumlah bintil akar, dimana pemberian perlakuan N0 (tanpa pemberian NaCl) dan L3 (15 g/kg benih) yaitu 22,33 buah, tidak berbeda nyata dengan (N1L3, N0L2 dan N3L3). Natrium yang diberikan pada tanah dengan dosis 7,5 g/tanaman berpengaruh pada rendahnya laju asimilasi bersih, jumlah bintil akar dan umur panen. Pengaruh utama  pemberian Legin memberikan pengaruh nyata terhadap parameter laju pertumbuhan relatif, laju asimilasi bersih, umur berbunga, jumlah bintil akar, berat bintil akar, umur panen dan indeks panen. Perlakuan terbaik adalah 15 g/kg benih (L3)

    Decision-making and control with metasurface-based diffractive neural networks

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    The ultimate goal of artificial intelligence is to mimic the human brain to perform decision-making and control directly from high-dimensional sensory input. All-optical diffractive neural networks provide a promising solution for implementing artificial intelligence with high-speed and low-power consumption. To date, most of the reported diffractive neural networks focus on single or multiple tasks that do not involve interaction with the environment, such as object recognition and image classification. In contrast, the networks that can perform decision-making and control, to our knowledge, have not been developed yet. Here, we propose using deep reinforcement learning to implement diffractive neural networks that imitate human-level decision-making and control capability. Such networks allow for finding optimal control policies through interaction with the environment and can be readily realized with the dielectric metasurfaces. The superior performances of these networks are verified by engaging three types of classic games, Tic-Tac-Toe, Super Mario Bros., and Car Racing, and achieving the same or even higher levels comparable to human players. Our work represents a solid step of advancement in diffractive neural networks, which promises a fundamental shift from the target-driven control of a pre-designed state for simple recognition or classification tasks to the high-level sensory capability of artificial intelligence. It may find exciting applications in autonomous driving, intelligent robots, and intelligent manufacturing

    Protoplast Cultures of Murraya Paniculata L. Jack and Their Regeneration Into Plant Precocious Flowering

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    Protoplasts isolated from embryogenic callus of Murraya paniculata (L. Jack.) were cultured in MT (Murashige and Tucker, 1969) basal medium containing 5% sucrose supplemented with kinetin, malt extract (ME) and 0.6 M sorbitol. About 85% of the surviving protoplasts formed a cell wall within 6 d of culture and the first cell division was observed 7 days after isolation. The highest plating efficiency was obtained on MT basal medium containing 5% sucrose supplemented with 0.01 mg L-1 kinetin 600 mg L-1 ME, MT basal medium containing 5% sucrose and supplemented with 0.01 mg L-1 Indole-acetic-acid (IAA) was found to be a medium suitable for the development somatic embryos into heart-shaped somatic embryos. The highest percentage of shoot formation was obtained using 0.1 mg L-1 Indole-acitic-acid (IAA) 0..1 mg L-1 gibberellic acid (GA3). In this investigation 40 plants were survived and grew normally in the soil. After two months maitained in the soil plants formed flower and flower developed into fruits on the soil treated with BA
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