scholarly journals PENURUNAN BOD, COD, DAN ZAT WARNA LIMBAH PENCELUPAN DENGAN FITOEKSTRAKSI MENGGUNAKAN KIAMBANG (Salvinia natans)

1970 ◽  
Vol 16 (1) ◽  
Author(s):  
I G.A. Kunti Sri Panca Dewi ◽  
Putu Suarya ◽  
Iryanti E. Suprihatin ◽  
Wahyu Dwijani S.
Keyword(s):  
Methylene Blue ◽  
Growth Medium ◽  
Congo Red ◽  
Treatment Technique ◽  
Time Treatment ◽  
Textile Dyeing ◽  
Before And After ◽  
Long Time ◽  
Salvinia Natans

This research was conducted to study the potential of the plants ‘useless’ as kiambang(Salvinia natans) which are easy to find, and not as valuable as textile dyeing waste handlingmedia. Treatment technique used is to replace the growth medium with the waste in questionin this case of waste taken in the dyeing industry. The concentration of methylene blueinwaste of  dye, and congo red, before and after treatment, determined by spectrophotometry.Fluid absorbance was measured at a wavelength of 664 nm for methylene blue and 496 nmfor congo red. Long time treatment used is 6, 12, 18, 24, 30, 36, and 48 hours. These resultsindicate that kiambang (Salvinia natans) is useful to lower BOD and COD of waste dyeing,although its ability to reduce the content of the dye congo red and blue methyl insignificant.This may be caused by too concentrated the dyeing waste.

scholarly journals Physiological and Psychological Effects of Watching Videos of Different Durations Showing Urban Bamboo Forests with Varied Structures

2020 ◽  
Vol 17 (10) ◽  
pp. 3434
Author(s):  
Yuqian Wang ◽  
Mingyan Jiang ◽  
Yinshu Huang ◽  
Zhiyi Sheng ◽  
Xiao Huang ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Skin Conductance ◽  
Human Body ◽  
Stable State ◽  
Mean Value ◽  
Psychological Effects ◽  
Physiological Indicators ◽  
Psychological Indicators ◽  
Before And After ◽  
Long Time

This study illustrated the physiological and psychological effects of watching videos of different durations showing bamboo forests with varied structures. Physiological indicators, including EEG (electroencephalogram), blood pressure, skin conductance, and pulse, were monitored in 180 Chinese university students (mean age: 20.72 ± 2.56 years) while they were watching bamboo videos. Before and after watching the videos, their psychological indicators, including positive and negative moods, were measured using the Profile of Mood States questionnaire. After watching the bamboo videos of different durations, all of the physiological indicators responded to the stimulation after only 1 min. The indicators showed different trends at 1, 3 and 5 min. EEG decreased and then was maintained at a stable level after 1 min, and the high β, low β, and α waves had no significant differences between 1, 3 and 5 min. Blood pressure dropped to a stable state after 3 min, and the decline was significantly different greater after 3 min than after 1 min. Skin conductance increased for 1 to 5 min, and it did not stabilize after a long time (5 min). Pulse decreased after 1 min but increased after 5 min. After watching the videos with bamboo of varying structures, the physiological and psychological indicators showed significantly different changes. Skin conductance significantly increased (mean value: 6.78%), and the amount of sweat was more effectively reduced, thereby reducing tension, when the students viewed videos of sympodial bamboo forests compared with monopodial bamboo forests. Bamboo forests with a higher canopy density (0.83–0.85) could significantly decrease α waves (mean value: 1.50 Hz), relaxing the human body. High β and low β waves showed greater decreases, with tension reduced more effectively, when bamboo forests with a low tilt ratio (< 1.5%) were viewed. Bamboo forests with neat undergrowth could have more beneficial physiological and psychological effects on the human body.

scholarly journals Effective Magnetic MOFs Adsorbent for the Removal of Bisphenol A, Tetracycline, Congo Red and Methylene Blue Pollutions

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1917
Author(s):  
Guangpu Zhang ◽  
Rong Wo ◽  
Zhe Sun ◽  
Gazi Hao ◽  
Guigao Liu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Electron Microscope ◽  
Bisphenol A ◽  
Congo Red ◽  
Reduction Process ◽  
Entropy Change ◽  
Potential Candidate ◽  
Order Kinetic ◽  
Adsorption Processes ◽  
Infrared Spectrometer

A magnetic metal−organic frameworks adsorbent (Fe3O4@MIL-53(Al)) was prepared by a typical solvothermal method for the removal of bisphenol A (BPA), tetracycline (TC), congo red (CR), and methylene blue (MB). The prepared Fe3O4@MIL-53(Al) composite adsorbent was well characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and fourier transform infrared spectrometer (FTIR). The influence of adsorbent quantity, adsorption time, pH and ionic strength on the adsorption of the mentioned pollutants were also studied by a UV/Vis spectrophotometer. The adsorption capacities were found to be 160.9 mg/g for BPA, 47.8 mg/g for TC, 234.4 mg/g for CR, 70.8 mg/g for MB, respectively, which is superior to the other reported adsorbents. The adsorption of BPA, TC, and CR were well-fitted by the Langmuir adsorption isotherm model, while MB followed the Freundlich model, while the adsorption kinetics data of all pollutants followed the pseudo-second-order kinetic models. The thermodynamic values, including the enthalpy change (ΔH°), the Gibbs free energy change (ΔG°), and entropy change (ΔS°), showed that the adsorption processes were spontaneous and exothermic entropy-reduction process for BPA, but spontaneous and endothermic entropy-increasing processes for the others. The Fe3O4@MIL-53(Al) was also found to be easily separated after external magnetic field, can be a potential candidate for future water treatment.

scholarly journals Removal of Methylene Blue and Congo Red Using Adsorptive Membrane Impregnated with Dried Ulva fasciata and Sargassum dentifolium

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 384
Author(s):  
Ahmed Labena ◽  
Ahmed E. Abdelhamid ◽  
Abeer S. Amin ◽  
Shimaa Husien ◽  
Liqaa Hamid ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Removal Efficiency ◽  
Congo Red ◽  
Dye Removal ◽  
Industrial Effluents ◽  
Composite Membranes ◽  
Acrylic Fiber ◽  
Ulva Fasciata ◽  
Ft Ir ◽  
Sorption Time

Biosorption is a bioremediation approach for the removal of harmful dyes from industrial effluents using biological materials. This study investigated Methylene blue (M. blue) and Congo red (C. red) biosorption from model aqueous solutions by two marine macro-algae, Ulva fasciata and Sargassum dentifolium, incorporated within acrylic fiber waste to form composite membranes, Acrylic fiber-U. fasciata (AF-U) and Acrylic fiber-S. dentifolium (AF-S), respectively. The adsorption process was designed to more easily achieve the 3R process, i.e., removal, recovery, and reuse. The process of optimization was implemented through one factor at a time (OFAT) experiments, followed by a factorial design experiment to achieve the highest dye removal efficiency. Furthermore, isotherm and kinetics studies were undertaken to determine the reaction nature. FT-IR and SEM analyses were performed to investigate the properties of the membrane. The AF-U membrane showed a significant dye removal efficiency, of 88.9% for 100 ppm M. blue conc. and 79.6% for 50 ppm C. red conc. after 240 min sorption time. AF-S recorded a sorption capacity of 82.1% for 100 ppm M. blue conc. after 30 min sorption time and 85% for 100 ppm C. red conc. after 240 min contact time. The membranes were successfully applied in the 3Rs process, in which it was found that the membranes could be used for five cycles of the removal process with stable efficiency.

scholarly journals In situ green synthesis of Cu nanoparticles supported on natural Natrolite zeolite for the reduction of 4‐nitrophenol, congo red and methylene blue

2017 ◽  
Vol 11 (5) ◽  
pp. 538-545 ◽  
Author(s):  
Mahmoud Nasrollahzadeh ◽  
S. Mohammad Sajadi ◽  
Mehdi Maham ◽  
Hamid Reza Dasmeh
Keyword(s):  
Methylene Blue ◽  
Green Synthesis ◽  
Congo Red ◽  
Cu Nanoparticles

Controlled Release of Active Substance from Biodegradable Copolymer Matrix

2006 ◽  
Vol 510-511 ◽  
pp. 798-801
Author(s):  
Hyung Suk So ◽  
Hyun Chul Shin ◽  
Beom Suk Kim ◽  
Yeong Seok Yoo
Keyword(s):  
Methylene Blue ◽  
Active Substance ◽  
Phosphate Buffer Solution ◽  
Ultra Violet ◽  
Hydroxyl Groups ◽  
Buffer Solution ◽  
Solution Ph ◽  
Effective Discharge ◽  
Constant Rate ◽  
Long Time

The purpose of this study is to develop a new system to control effective discharge of active substances such as agricultural chemicals. To synthesize a naturally dissolvable polymer; ε-caprolactone and diglycolide were copolymerized with ethylene glycol as an initiator to produce macrodiol. As macrodiol has hydroxyl groups in both ends, they are modified with methacryloyl chloride for photochemical networking. After standard macromonomer produced by this procedure was physically mixed with methylene blue, it was networked with ultra-violet rays to be filmed. This film is naturally dissolvable and hydrolytic. As a result of hydrolytic test with a crosslinked structure of 10 % methylene blue, it decreased by 9 % for seven weeks in 37 °C phosphate buffer solution (pH = 7). Thus, we verified that active substance can be discharged from a crosslinked structure for a long time at a constant rate under room temperature.

scholarly journals Development of a Nephrotic Syndrome in a Patient with Gastrointestinal Stromal Tumor during a Long-Time Treatment with Sunitinib

2012 ◽  
Vol 5 (3) ◽  
pp. 651-656 ◽  
Author(s):  
Maria Caterina Pallotti ◽  
Maria Abbondanza Pantaleo ◽  
Margherita Nannini ◽  
Francesca Centofanti ◽  
Benedetta Fabbrizio ◽  
...  
Keyword(s):  
Nephrotic Syndrome ◽  
Gastrointestinal Stromal Tumor ◽  
Stromal Tumor ◽  
Time Treatment ◽  
Long Time

THE EFFECTS OF ELECTROACUPUNCTURE COMBINED WITH ACUPRESSURE POINTS, MASSAGE TREATMENT AND “DOC HOAT TANG KY SINH” REMEDY ON TREATING SCIATICA DUE TO LUMBAR SPONDYLOSIS

2020 ◽  
pp. 105-111
Author(s):  
Giang Huynh Huong ◽  
Tan Nguyen Thi ◽  
Hung Nguyen Van
Keyword(s):  
Traditional Medicine ◽  
Modern Medicine ◽  
Common Disease ◽  
Working Ability ◽  
Treatment Results ◽  
Lumbar Spondylosis ◽  
Before And After ◽  
Massage Treatment ◽  
Long Time ◽  
Methods Of Treatment

Background: Sciatica due to lumbar spondylosis is a common disease syndrome, include pathological signs from lumbar spine and sciatic nerve. It occurs for a long time and affects to working ability and daily life. Currently there are many methods of treatment with modern medicine and traditional medicine. Electroacupuncture combined with acupressure point, massage treatment and “Doc hoat tang ky sinh” remedy is a highly effective method on treating sciatica due to lumbar spondylosis. Objectives: To evaluate the effectives of electroacupuncture combined with acupressure point, massage treatment and “Doc hoat tang ky sinh” remedy on treating sciatica due to lumbar spondylosis. Materials and Method: A total of 43 patients was diagnosed sciatica caused by lumbar spondylosis who treated at Thua Thien Hue Traditional Medicine Hospital. The study was designed by method of prospective study, assessed the results before and after the treatment. Results: Very good: 34.9%; good: 34.9%; average 7%. There was not any unexpected effects observed in this trial. Conclusion: Electroacupuncture combined with acupressure point, massage treatment and “Doc hoat tang ky sinh” remedy is a effective method on treating sciatica caused by lumbar spondylosis. Key words: sciatica, lumbar spondylosis, acupuncture, electroacupuncture, acupressure point, massage treatment

The Longevity of Homosexuals: Before and after the Aids Epidemic

1994 ◽  
Vol 29 (3) ◽  
pp. 249-272 ◽  
Author(s):  
Paul Cameron ◽  
William L. Playfair ◽  
Stephen Wellum
Keyword(s):  
Early Death ◽  
Drug Abusers ◽  
Surgeon General ◽  
Aids Epidemic ◽  
Short Lifespan ◽  
Before And After ◽  
Long Time ◽  
The Individual ◽  
Intravenous Drug Abusers ◽  
Age Of Death

Although the U.S. Surgeon General characterized homosexual sex as “normal” and “healthy,” homosexuals and IV drug abusers have suffered disproportionately from the AIDS epidemic. Longevity is often utilized as a measure of health. How long did homosexuals live before the AIDS epidemic and how long do they live today? We examined 6,737 obituaries/death notices from eighteen U.S. homosexual journals over the past thirteen years and compared them to obituaries from two conventional newspapers. The obituaries from the non-homosexual newspapers were similar to U.S. averages for longevity: the median age of death of married men was seventy-five, 80 percent died old (65 or older); for unmarried men it was fifty-seven, 32 percent died old; for married women it was seventy-nine, 85 percent died old; for unmarried women it was seventy-one, 60 percent died old. For the 6,574 homosexual deaths, the median age of death if AIDS was the cause was thirty-nine irrespective of whether or not the individual had a Long Time Sexual Partner [LTSP], 1 percent died old. For those 829 who died of non-AIDS causes the median age of death was forty-two (41 for those 315 with a LTSP and 43 for those 514 without) and <9 percent died old. Homosexuals more frequently met a violent end from accidental death, traffic death, suicide, and murder than men in general. The 163 lesbians registered a median age of death of forty-four (20% died old) and exhibited high rates of violent death and cancer as compared to women in general. Old homosexuals appear to have been proportionately less numerous than their non-homosexual counterparts in the scientific literature from 1858 to 1993. The pattern of early death evident in the homosexual obituaries is consistent with the pattern exhibited in the published surveys of homosexuals and intravenous drug abusers. Homosexuals may have experienced a short lifespan for the last 140 years; AIDS has apparently reduced it about 10 percent. Such an abbreviated lifespan puts the healthfulness of homosexuality in question.

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