A Flexible Chemosensor Based on Colorimetric and Fluorescent Dual Modes for Rapid and Sensitive Detection of Hypochlorite Anion

A flexible chemosensor has been developed based on colorimetric and fluorescent dual modes using tetraphenylethylene-centered tetraaniline (TPE4A) for rapid and sensitive detection of hypochlorite anion. The fluorescent probe TPE4A exhibits a unique aggregation-induced emission (AIE) character which is proved by a blue shift of the fluorescent peak from 544 to 474 nm with the water equivalents increasing. With the addition of hypochlorite in solution, the absorbance of the probe changes and the responding fluorescence color can be observed to change from light green to purple. The detection limit of hypochlorite is 1.80 × 10−4 M in solution, and the visual detection limit is 1.27 µg/cm2 with the naked eye for the flexible paper-based chemosensor. The proposed flexible chemosensors show a good selectivity and sensitivity which has great potential for effective detection of hypochlorite anions without any spectroscopic instrumentation.

Menstimulus Tumbuh Kembang Balita Dengan Gizi Seimbang Pada Masa Pandemi Covid-19

ABSTRAK Pertumbuhan dan perkembangan anak distimulus oleh pemenuhan gizi seimbang. Masalah gizi seimbang disebabkan karena asupan nutrisi yang kurang dan tingginya penyakit infeksi. Gugus Penanganan Covid-19 di Indonesia merilis bahwa kasus anak terkonfirmasi positif Covid-19 semakin meningkat bahkan menduduki peringkat pertama di Asia Tenggara. Provinsi Jawa Barat (31%) sebagai penyumbang tertinggi di Bogor (28%), masalah gizi khususnya stunting terjadi di Kecamatan Caringin sebanyak 30%. Berdasarkan survey berat badan balita menggunakan KMS (Kartu Menuju Sehat) didapatkan berat badan balita 45% berada di garis hijau tua (gizi baik), 35% berada di garis hijau muda bawah (premalnutrisi), dan 20% berada digaris hijau muda atas (preobesitas), selain itu ditemukan juga balita yang memiliki kebiasaan sering jajan makanan di warung. Tujuan kegiatan ini untuk meningkatkan pengetahuan ibu-ibu tentang cara menstimulus tumbuh kembang balita dengan memenuhi kebutuhan gizi seimbang pada balita. Promosi kesehatan yang diberikan menggunakan power point, video, leaflet serta tanya jawab. Terdapat 80% peningkatan pengetahuan ibu-ibu yang memiliki anak balita tentang cara menstimulus tumbuh kembang balita dengan gizi seimbang dan cara mengolah makanan sehat serta memodifikasi makanan balita di masa pandemic covid-19. Kata kunci : Gizi Seimbang, Menstimulasi, Tumbuh Kembang. ABSTRACT The growth and development of children are stimulated by the fulfillment of balanced nutrition. Balanced nutrition problems are caused by inadequate nutritional intake and highly infectious diseases. The Covid-19 Handling Group in Indonesia released that cases of children who were confirmed positive for Covid-19 were increasing and even ranked first in Southeast Asia. West Java Province (31%) as the highest contributor in Bogor (28%), nutritional problems, especially stunting, occurred in Caringin District as much as 30%. Based on a survey of toddlers' weight using the KMS (Card Towards Healthy) it was found that 45% of toddlers' weight was in the dark green line (good nutrition), 35% was in the lower light green line (premalnutrition), and 20% was in the upper light green line (pre obesity). besides that, it was also found that toddlers had a habit of often snacking at food stalls. The purpose of this activity is to increase the knowledge of mothers on how to stimulate the growth and development of toddlers by meeting the needs of balanced nutrition in toddlers. Health promotions are provided using power points, videos, leaflets, and questions and answers. There is an 80% increase in knowledge of mothers who have toddlers about how to stimulate toddler growth and development with balanced nutrition and how to process healthy food and modify toddler food during the covid-19 pandemic. Keywords: Balanced Nutrition, Stimulating, Growth.

Results of competitive variety testing of new squash varieties in Uzbekistan

The aim of the research is to breed short climbing, early maturing, high-yielding varieties of squash in the natural and climatic zone of Uzbekistan.Methods. The samples of squash 0044SQ (Holland) and BT+KB-001 (Turkey) were taken from the gene pool of the Research Institute of Plant Industry (Uzbekistan) in 2012 for breeding work. In 2013, squash samples were studied in the nursery of the source material, where they were evaluated for biological and economically valuable traits. Individual selection of plants was carried out. In further breeding work (2014-2016 and 2018), the lines LZ-2513 and LH-1916 were distinguished.Results. The method of analytical breeding created short-climbing, early maturing, high-yielding of squash lines LZ-2513 and LH-1916. Line LZ-2513 has rounded fruits of light green color. The LH-1916 variety has elongated, dark green fruits. Competitive variety trials of new lines were conducted in 2019-2020. Unumdor variety zoned in the republic served as a standard. It was found that from sprouting to maturity of the fruit in the line LZ-2513 is 44 days, in the line LH-1916 – 45 days. High marketable yield was recorded for squash line LZ-2513 – 18.3 tons/ha (122% of the standard); in line LH-1916 marketable yield was 16.4 tons/ha (112.4% of the standard). This year we organized the primary seed production of squash lines LZ-2513 and LH-1916 for multiplication.Conclusion. Promising for cultivation in conditions of Uzbekistan squash line LZ-2513 Orbita (NAP 20200087) and line LH-1916 Viridi (NAP 20200088) were submitted to the Intellectual Property Agency under the Ministry of Justice of the Republic of Uzbekistan to be patented.

Morphological features of fruits, seeds and seedlings of Aerva lanata (L.) Juss. in the conditions of introduction to the Southern coast of the Crimea

The results of the study of the early stages of the ontogenesis of Aerva lanata (L.) Juss. in the conditions of introduction to the Southern coast of the Crimea are presented. Morphobiological signs of seeds, morphological features of fruits, seeds and seedlings were revealed. The fruit of A. lanata is a densely pubescent single-seeded box of a rounded shape from greenish to cream color. The morphometric parameters of the seeds have a very low level of variability (from 5 to 10%). On average, their length is 0.72 mm, width - 0.55 mm, and thickness - 0.40 mm. As a result of the research, the seeds were found to be of different quality. Immature seeds from red to dark brown are located mainly in the upper and middle part of the inflorescence. The marginal embryo is milky in color, covering the abundant perisperm in a semicircle, on average 1.55 mm in length and 0.16 mm in width. The seedlings are small lobe-shaped, petiolate light green 2 mm long and 1 mm wide. The hypocotyl is white 0.4 mm long. According to the method of distribution of diaspores, A. lanata refers to barochora plants. The coefficient of semenification was 36.2%.

Characterization of natural silicate garnets by means of non-destructive testing methods

Two kinds of natural silicate garnets from the known origin countries were investigated: pyralspites – pyrope (Russia), almandine (India), rhodolite (India), spessartine (India), blue colour-change garnet (Sri Lanka), and ugrandites – andradite (Russia), demantoid (Russia), topazolite (Russia), rainbow garnet (Japan), grossular (Kenya-Tanzania), colourless grossular (India), light orange grossular (India), dark green tsavorite (Tanzania), medium green tsavorite (Kenya), light green tsavorite (Kenya), orange hessonite (Sri Lanka), pink hessonite (Sri Lanka), cinnamon hessonite (India) and uvarovite (Russia). The chemical composition of the garnets was performed with a scanning electron microscope. The physical properties such as specific gravity and refractive index were measured for the majority of garnets investigated. The spectroscopic meth­ods – visible light absorption spectrophotometry, Raman spectroscopy and cathodoluminiscence microscopy – were applied for the characterization of the mentioned natural silicate garnets.

Nephrite of Bazhenovskoye Chrysotile–Asbestos Deposit, Middle Urals: Localization, Mineral Composition and Color

In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies of the serpentinite type were found on the contact of after gabbro rodingites and serpentinites. The color is uniform to non-uniform, green to light green, bluish green, greyish green, and whitish. Spots, streaks, lenticules of bright bluish-green or, on the contrary, light green color are sometimes noted. The nephrite is mostly comprised of tremolite. Chromite decreases the quality of the ornamental stone, but it is replaced by chrome grossular, which gives the nephrite a brighter bluish-green color locally. Crushed grains of chromite contain increased concentrations of Zn and Mn. The quality of the nephrite is decreased by serpentine and talc, as well as by fractures due to drilling and blasting works. The specific feature of the nephrite in the Bazhenovskoye deposit is the formation of nickeline, maucherite, and uvarovite. The green color is associated with Fe2+ ions. The nephrite of the Bazhenovskoye deposit meets the requirements for an ornamental stone. The origin of this nephrite includes a combination of metasomatic and metamorphic processes.

The influence of the timing and methods of harvesting the seed grass of the eastern goat’s rue (Galega orientales Lam.) on the yield and sowing quality of seeds

Eastern goat’s rue (Galega orientales Lam.) possesses high fodder productivity and accumulates a large amount of vegetative mass with high humidity for harvesting for seeds. This greatly complicates the harvesting of grass stand for seeds. One of the ways to solve this problem is to carry out desiccation of the grass stand. A complicating factor in choosing the optimal harvesting period is the extended flowering and ripening period of goat’s rue beans, the duration of which reaches 25-35 days. The use of the drug Reglon Super based on diquat is a highly effective agrotechnical method that allows increasing the collection of seeds by 24%. The desiccation of the herbage contributes to the production of seeds with high sowing qualities. The seeds with the best sowing qualities are found in beans with yellow, brown, brown or dark brown color of the beans. In light green beans, the seeds are fully formed, but have a high moisture content. Goat’s rue beans do not crack or crumble at the onset of the full ripeness phase. This allows the seed to be harvested when most of the beans are ripe. A comparative assessment of the timing and method of harvesting the seed herbage of the goat’s rue showed that with a ripening of 39% and the presence of 47% of light green and yellow beans, the yield losses ranged from 26 to 56%. The highest seed yield in one confidence interval of 422-453 kg / ha and 444 kg / ha was obtained, respectively, by direct threshing with preliminary desiccation of the grass stand in the ripening phase of 74-97% of beans or by separate harvesting when mowing into swaths during ripening 74 % beans.