Blog List

Wednesday, 11 October 2017

Dermatologist Removal of Dark Circles Around the Eye

Author
by 
If you have dark circles under your eyes, this doesn't mean that all those nights out on the town have finally caught up with you. Mayo Clinic experts state that dark eye circles aren't caused by fatigue, but they are often simply the result of shadows cast by puffy upper eyelids as well as hollows that form as you age. In some cases, the most effective treatment that a dermatologist may mention is blepharoplasty, a plastic surgical procedure to remove eye bags.

Other Causes

Dark circles around the eyes, as well as eye bags and puffy eyelids, can be caused by a number of factors other than the intrinsic aging process, says the Mayo Clinic. Allergies and nasal congestion, atopic dermatitis, pigmentation irregularities, sun exposure, smoking, and drinking alcohol and caffeinated beverages can be the cause of dark, shadowy eyes. But sometimes it's simply a matter of genetics, and dark circles are passed down from one family member to another. Dark eye circles aren't usually a cause for medical alarm, says the Mayo Clinic, but they can make you look haggard and tired.
Advertisement
 
Certain cosmetic treatments used to address signs of photoaging, such as wrinkles and age spots, may be used to reduce the appearance of dark eye circles, says Mayo Clinic experts. A dermatologist may use a laser or light-based device to address under-eye circles, says the American Academy of Dermatology, an outpatient procedure that can be done in under an hour. Improvement may not be noted right away, and to get the best results, multiple treatments may be needed (anywhere between three and six sessions). It might not be the right treatment for everyone; the AAD cautions that laser and light treatments do not yield the same results as a surgical procedure.

Other Medical Treatments

The Mayo Clinic cites a chemical peel as another cosmetic treatment that may be used to rejuvenate the skin, making dark eye circles less obvious. The AAD indicates that a chemical peel can be used to reduce fine lines under the eyes, but it may also be used to smooth away lines that linger after a laser treatment so that the area where the laser stopped isn't as noticeable. The effects of a chemical peel are unlikely to be permanent, and certain post-treatment care must be exercised, which includes using adequate sun protection and avoiding exposure to the sun. The AAD stresses that after a chemical peel, a dermatologist's instructions for post-treatment care must be followed down to the letter to avoid infection and scarring.

Blepharoplasty

The aging process causes eyelids to stretch; the supporting muscles loose their strength. Excess fat can migrate either above or below the eyelids, resulting in baggy eyes, as well as drooping eyebrows and upper eyelids. Eyelid surgery, or blepharoplasty, is an outpatient procedure performed under anesthesia by a cosmetic surgeon to remove the excess fat, muscle and skin. The Mayo Clinic states that the results of eyelid surgery–a more alert, rested appearance–can last a lifetime, although others will notice subsequent eyelid drooping.

At-Home Care

The treatment for dark circles around the eyes depends on the underlying cause. Sometimes the cure may be as simple as treating allergies more effectively, sleeping with your head raised at night (to prevent fluid from pooling under your eyes) or getting additional sleep. The Mayo Clinic sites one study indicating that an eye cream containing vitamins C, K and E and retinol had moderate effects in reducing dark eye circles. A dermatologist or plastic surgeon can help you find the most appropriate cosmetic treatment. However, Mayo Clinic experts indicate that if you experience puffiness and discoloration in only one eye, or if symptoms appear to be getting worse, consult with your general practitioner.
For further information log on website :
https://www.livestrong.com/article/88526-dermatologist-removal-dark-circles-around/

Why Do You Get Dark Circles Under Your Eyes When You Are Tired?

Author
by 


A cold shower and a cup of coffee may help you mentally recover from a sleepless night, but the telltale circles under your eyes announce to the world that you're feeling tired. Whether they're faint purple shadows or dark blue smudges, undereye circles make you look exhausted--and may also make you look older than you really are.

The Facts

You may notice smudges and shadows under your eyes in the morning or at the end of a long day, but doctors define dark circles as uniform, round areas of darker pigmentation that appear under both of your eyes, according to the Mayo Clinic. Though the Mayo Clinic says they're most common in adults, children can get dark circles, too.
Advertisement

When you're tired, your skin can get dull and dehydrated, causing hollow areas below your eyes and allowing dark blood vessels and tissue beneath your skin to show through, according to the New York Times. The thin, delicate skin around your eyes may be especially susceptible. Sleeplessness can also cause fluids to accumulate around your eyelids, puffing them up so that they cast dark shadows onto the area under your eyes, according to the Mayo Clinic.

Prevention/Solution

If lack of sleep is an ongoing problem, talk with your health-care provider so you can look for a solution. If your dark circles are just an occasional problem, Jeannette Graf, an associate clinical professor of dermatology at the Mount Sinai School of Medicine in New York City, recommends in "Real Simple" magazine that you use a cold compress when you wake up to soothe puffiness and follow up with an eye cream that contains caffeine, which will constrict blood vessels so they're less noticeable. Use a retinol cream at night to stimulate collagen production to prevent thinning skin.

Expert Insight

If you had a sleepless night and need to hide your dark circles fast, "Allure" magazine suggests opting for an emollient concealer that's an exact match for your skin color--don't go a shade lighter--and applying it on top of a light-diffusing eye cream.

Considerations

Though lack of sleep can cause or exacerbate dark circles, sleeplessness isn't the most common cause of dark circles. If you regularly get enough sleep and still have dark circles, your over-pigmented eyes may be caused by allergies, eczema, nasal congestion, irregular pigmentation or genetics. Treatments for dark circles are similar whatever their cause, but consider seeing a dermatologist if you're not sure what's causing your dark circles. You should also see a dermatologist if your dark circles are under only one of your eyes.
For further information log on website :
https://www.livestrong.com/article/154973-why-do-you-get-dark-circles-under-your-eyes-when-you-are-tired/

Contribution To The Study Of Flocculation Of Digestate

Author
Silvie Heviánková / Radek Souček / Miroslav Kyncl / Naděžda Surovcová
Published Online: 2015-12-16 | DOI: https://doi.org/10.1515/gse-2015-0021

Abstract

The paper deals with the intensification of separating the solid phase of digestate using flocculants only. The separated solid phase should subsequently be used in agriculture for fertilising. Flocculants (polyacrylamides) are difficult to biodegrade. In this respect, they should not deteriorate the properties of the solid phase and the flocculant dose must be as low as possible. The research aimed to identify the optimal cationic flocculant and its application procedure which would enable a dosage that would be both economically and ecologically acceptable. We tested 21 cationic flocculants of different charge density and molecular weight and 1 mixture of two selected flocculants (Sokoflok 53 and Sokoflok 54) with the aim to discover the lowest possible dose of flocculating agent to achieve the effective aggregation of digestate particles. The lowest flocculant doses were obtained using the mixture of flocculants labelled Sokoflok 53 and Sokoflok 54 in 4:1 proportion, both of a low charge density and medium molecular weight, namely 14.54 g/kg of total solids for a digestate from the biogas plant Stonava and namely 11.80 g/kg of total solids for a digestate from the biogas plant Vrahovice. The findings also reveal that flocculation is most effective during two-stage flocculant dosing at different mixing time and intensity.
Keywords: whole digestateflocculantcharge densitymolecular weight

REFERENCES

  • [1] ALBERTSON, O. E.; KOPPER, M. Fine-coal-aided centrifugal dewatering of waste activated sludge. Journal (Water Pollution Control Federation). 1983, 145-156.Google Scholar
  • [2] ALVARENGA, E.; HAYRAPETYAN, S.; GOVASMARK, E.; HAYRAPETYAN, L. AND SALBU, B. Study of the flocculation of anaerobically digested residue and filtration properties of bentonite based mineral conditioners. Journal of Environmental Chemical Engineering. 2015, 3(2), 1399–1407.Google Scholar
  • [3] BENITEZ, J.; RODRIGUEZ, A.; SUAREZ, A. Optimization technique for sewage sludge conditioning with polymer and skeleton builders. Water Research. 1994, 28(10), 2067-2073.CrossrefGoogle Scholar
  • [4] BOLTO, B.; GREGORY, J. Organic polyelectrolytes in water treatment. Water research. 2007, 41(11), 2301-2324.Google Scholar
  • [5] CHEN, C.; ZHANG, P; ZENG, G.; DENG, J.; ZHOU, Y.; LU, H. Sewage sludge conditioning with coal fly ash modified by sulfuric acid. Chemical Engineering Journal. 2010, 158(3), 616-622.Web of ScienceGoogle Scholar
  • [6] ČSN EN 872. Water quality - Determination of suspended solids - Method by filtration through glass fibre. Praha: Czech standards institute, 2005.Google Scholar
  • [7] ČSN 75 7346. Water quality - Determination of dissolved substances. Praha: Czech standards institute, 2002.Google Scholar
  • [8] ČSN 75 7347. Water quality - Determination of dissolved inorganic salts in waste water - Gravimetric method after filtration through glass fibre filter. Praha: Czech standards institute, 2009.Google Scholar
  • [9] ČSN 75 7350. Water quality - Determination of the loss of ignition of suspended solids. Praha: Czech standards institute, 2008.Google Scholar
  • [10] ČSN EN 12879. Characterization of sludges - Determination of the loss on ignition of dry mass. Praha: Czech standards institute, 2001.Google Scholar
  • [11] ČSN EN 14701-1. Characterisation of sludges - Filtration properties - Part 1: Capillary suction time (CST). Praha: Czech standards institute, 2006.Google Scholar
  • [12] ČSN EN 1899-1. Water Quality - Determination of biochemical oxygen demand after n days (BODn) - Part 1: Dilution and seeding method with allylthiourea addition. Praha: Czech standards institute, 1999.Google Scholar
  • [13] ČSN ISO 6060. Water quality - Determination of the chemical oxygen demand. Praha: Czech standards institute, 2008.Google Scholar
  • [14] ČSN ISO 6332. Water quality - Determination of iron - Spectrometric method using 1,10-phenantroline. Praha: Czech standards institute, 1995.Google Scholar
  • [15] ČSN ISO 6333. Water quality. Determination of manganese. Formaldoxime spectrometric method. Praha: Czech standards institute, 1996.Google Scholar
  • [16] ČSN EN ISO 6878. Water quality - Determination of phosphorus - Ammonium molybdate spectrometric method. Praha: Czech standards institute, 2005.Google Scholar
  • [17] ČSN ISO 9297. Water quality. Determination of chloride. Silver nitrate titration with chromate indicator (Mohr's method). Praha: Czech standards institute, 1996.Google Scholar
  • [18] ČSN ISO 9964-3. Water quality. Determination of sodium and potassium. Part 3: Determination of sodium and potassium by flame emission spectrometry, 1996.Google Scholar
  • [19] ČSN EN ISO 14911. Water quality - Determination of dissolved Li+, Na+, NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ using ion chromatography - Method for water and waste water. Praha: Czech standards institute, 2000.Google Scholar
  • [20] ČSN EN ISO 15586. Water quality - Determination of trace elements using atomic absorption spectrometry with graphite cell. Praha: Czech standards institute, 2004.Google Scholar
  • [21] ČSN ISO 29441. Water quality – Determination of total nitrogen after UV digestion – Method using flow analysis (CFA and FIA) and spectrometric detection. Praha: Czech standards institute, 2011.Google Scholar
  • [22] HEVIANKOVA, S.; KYNCL, M.; KODYMOVA, J. Study and Research on Cleaning Procedures of Anaerobic Digestion Products. GeoScience Engineering. 2014. 60(4), 39-50.Google Scholar
  • [23] KOLAR, L.; KUZEL, S.; PETERKA, J.; BOROVA-BATT, J. Agrochemical value of the liquid phase of wastes from fermenters during biogas production. Plant, Soil and Environment. 2010, 56(1), 23-27.Google Scholar
  • [24] LIN, Y.F.; JING S.R.; LEE, D.Y. Recycling of wood chips and wheat dregs for sludge processing. Bioresource technology, 2001, 76(2), 161-163.Google Scholar
  • [25] POPOVIC, O.; GIOELLI, F.; DINUCCIO, E.; BALSARI, P. Effect of different slurry pre–treatments on mechanical separation methods efficiency: preliminary results. In Proceedings of the 15th Ramiran Conference - S8. Treatment processes for agriculture: 3-5 June, 2013.Google Scholar
  • [26] Product data sheet: Kemira Superfloc C-490 series. Available at http://www.strykerchem.com/docs/SuperflocC-496TDS.pdf (accessed 7-10-2015).
  • [27] QI, Y.; THAPA, K. B.; HOADLEY, A. F. Application of filtration aids for improving sludge dewatering properties–a review. Chemical Engineering Journal. 2011, 171(2), 373-384.Web of ScienceGoogle Scholar
  • [28] SANDER, B.; LAUER, H.; NEUWIRTH, M. Process for producing combustible sewage sludge filter cakes in filter presses. U.S. Patent No 4,840,736, 1989.Google Scholar
  • [29] SIEVERS, D. M.; JENNER, M. W.; HANNA, M. Treatment of dilute manure wastewaters by chemical coagulation. Transactions of the ASAE. 1994, 37(2), 597-601.Google Scholar
  • [30] SOUČEK, R. Testování intenzifikace oddělení tuhé fáze z digestátu při odstřeďování. Diplomová práce, Ostrava: VŠB-TUO, 2014.Google Scholar
  • [31] SUROVCOVÁ, N., Intenzifikace separace tuhé fáze z digestátu a fugátu použitím vybraných flokulantů, diplomová práce. VŠB-TUO, 2015.Google Scholar
  • [32] ZHAO, Y.Q. Enhancement of alum sludge dewatering capacity by using gypsum as skeleton builder. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2002, 211(2), 205-212.CrossrefGoogle Scholar
  • [33] ZHAO, Y.Q. Involvement of gypsum (CaSO4· 2H2O) in water treatment sludge dewatering: a potential benefit in disposal and reuse. Separation science and technology. 2006, 41(12), 2785-2794.Google Scholar

About the article

Published Online: 2015-12-16
Published in Print: 2015-09-01

Citation Information: GeoScience Engineering, ISSN (Online) 1802-5420, DOI: https://doi.org/10.1515/gse-2015-0021.
© 2015 Silvie Heviánková et al., published by De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0
For further details log on wbesite :
https://www.degruyter.com/view/j/gse.2015.61.issue-3/gse-2015-0021/gse-2015-0021.xml?rskey=BCyRzR&result=10

Advantages and Disadvantages of Fasting for Runners

Author BY   ANDREA CESPEDES  Food is fuel, especially for serious runners who need a lot of energy. It may seem counterintuiti...