The handbook of hearing and the effects of noise physiology psychology and public health pdf

•

1 gostou•58 visualizações

L

LeilaCampbell547

The handbook of hearing and the effects of noise physiology psychology and public health pdf

The Handbook of Hearing and the Effects of Noise:
Physiology, Psychology, and Public Health
Karl D. Kryter

Publisher : Emerald Group Publishing Limited
Release Date :

ISBN : 0124274552
Author : Karl D. Kryter
Download Here
http://eap-books.club/readonline/?item=0124274552&lan=en

The Handbook of Hearing and the Effects of Noise presents the methods and the results of research
for quantitatively describing the major attributes of hearing and the effects of sound and noise on
people. It contains information of interest to government decision makers, architects, and engineers
concerned with criteria, guidelines, and standards for acceptable and safe levels of sound and noise.
Download Here
http://eap-books.club/readonline/?item=0124274552&lan=en

Download Here
http://eap-
books.club/readonline/?item=0124274552&lan=en
Powered by TCPDF (www.tcpdf.org)

Mais conteúdo relacionado

Destaque

La vigilancia tecnológica y la inteligencia competitiva

La vigilancia tecnológica y la inteligencia competitiva

La vigilancia tecnológica y la inteligencia competitiva

SAST_QSDL

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Joel "Thor" Neeb

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Universidade Estadual do Ceará

Happy BIrthday Yellow Skeleton

Happy BIrthday Yellow Skeleton

Happy BIrthday Yellow Skeleton

Karina Mello da Rocha

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

Destaque (6)

La vigilancia tecnológica y la inteligencia competitiva

La vigilancia tecnológica y la inteligencia competitiva

La vigilancia tecnológica y la inteligencia competitiva

SAST_QSDL

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Afterburner Webinars | Organizational Alignment - The Foundation of Business ...

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Ciclo e-M: Avaliação Sistemática da Gestão Tecnopedagógica

Happy BIrthday Yellow Skeleton

Happy BIrthday Yellow Skeleton

Happy BIrthday Yellow Skeleton

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

PECB Webinar: Estructura de la norma ISO 22301:2012. Un enfoque estratégico.

Último

Just Call Vip call girls Srinagar Jammu Kashmir Escorts ☎️ 8617697112 Starting From 5K to 15K High Profile Escorts In Srinagar Jammu Kashmir ❤Personal Whatsapp Number Jammu Kashmir Call Girls 8617697112 💦✅. There are a number of Srinagar Jammu Kashmir Escorts willing to meet you at an affordable rate, which also possesses high moral standards and humanitarian tendencies. These girls can help satisfy the sexual desires of clients without fail; it is therefore essential that clients select an established service. Our services feature various packages at competitive rates: One shot: ₹2000/in-call, ₹5000/out-call Two shots with one girl: ₹3500/in-call, ₹6000/out-call Body to body massage with sex: ₹3000/in-call Full night for one person: ₹7000/in-call, ₹10000/out-call

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

Clean In Place(CIP).pptx .

Clean In Place(CIP).pptx .

Clean In Place(CIP).pptx .

Poonam Aher Patil

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service Best High Class call girls Service Escorts Service in Home Hotel in Delhi NCR 24 Hours Available Service. We provide Super Class Hot and Sexy Indian Female Escorts Service, A to Z Body and Mind Satisfaction by Top Class Female Models in Delhi Gurgaon Noida NCR in Hotel 24hrs In Call and Out Call Service At Lowest Price. We Have Indian Punjabi Kashmiri Northeast Every Type Sexy Bold Beautiful Young Soft Cute Charming Female Escorts Available. Hygienic Full AC Neat and Clean Rooms Avail. In Hotel 24hrs in Delhi NCR

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

+971581248768 Mtp-Kit (500MG) Prices » Dubai [(+971581248768**)] Abortion Pills For Sale In Dubai, UAE, Mifepristone and Misoprostol Tablets Available In Dubai, UAE CONTACT DR.Maya Whatsapp +971581248768 We Have Abortion Pills / Cytotec Tablets /Mifegest Kit Available in Dubai, Sharjah, Abudhabi, Ajman, Alain, Fujairah, Ras Al Khaimah, Umm Al Quwain, UAE, Buy cytotec in Dubai +971581248768''''Abortion Pills near me DUBAI | ABU DHABI|UAE. Price of Misoprostol, Cytotec” +971581248768' Dr.DEEM ''BUY ABORTION PILLS MIFEGEST KIT, MISOPROTONE, CYTOTEC PILLS IN DUBAI, ABU DHABI,UAE'' Contact me now via What's App…… abortion Pills Cytotec also available Oman Qatar Doha Saudi Arabia Bahrain Above all, Cytotec Abortion Pills are Available In Dubai / UAE, you will be very happy to do abortion in Dubai we are providing cytotec 200mg abortion pill in Dubai, UAE. Medication abortion offers an alternative to Surgical Abortion for women in the early weeks of pregnancy. We only offer abortion pills from 1 week-6 Months. We then advise you to use surgery if its beyond 6 months. Our Abu Dhabi, Ajman, Al Ain, Dubai, Fujairah, Ras Al Khaimah (RAK), Sharjah, Umm Al Quwain (UAQ) United Arab Emirates Abortion Clinic provides the safest and most advanced techniques for providing non-surgical, medical and surgical abortion methods for early through late second trimester, including the Abortion By Pill Procedure (RU 486, Mifeprex, Mifepristone, early options French Abortion Pill), Tamoxifen, Methotrexate and Cytotec (Misoprostol). The Abu Dhabi, United Arab Emirates Abortion Clinic performs Same Day Abortion Procedure using medications that are taken on the first day of the office visit and will cause the abortion to occur generally within 4 to 6 hours (as early as 30 minutes) for patients who are 3 to 12 weeks pregnant. When Mifepristone and Misoprostol are used, 50% of patients complete in 4 to 6 hours; 75% to 80% in 12 hours; and 90% in 24 hours. We use a regimen that allows for completion without the need for surgery 99% of the time. All advanced second trimester and late term pregnancies at our Tampa clinic (17 to 24 weeks or greater) can be completed within 24 hours or less 99% of the time without the need surgery. The procedure is completed with minimal to no complications. Our Women's Health Center located in Abu Dhabi, United Arab Emirates, uses the latest medications for medical abortions (RU-486, Mifeprex, Mifegyne, Mifepristone, early options French abortion pill), Methotrexate and Cytotec (Misoprostol). The safety standards of our Abu Dhabi, United Arab Emirates Abortion Doctors remain unparalleled. They consistently maintain the lowest complication rates throughout the nation. Our Physicians and staff are always available to answer questions and care for women in one of the most difficult times in their lives. The decision to have an abortion at the Abortion Clinic in Abu Dhabi, (United Arab Emirates)+971581248768

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

?#DUbAI#??##{{(☎️+971_581248768%)**%*]'#abortion pills for sale in dubai@

Zoology 5th semester notes( Sumit_yadav).pdf

Zoology 5th semester notes( Sumit_yadav).pdf

Zoology 5th semester notes( Sumit_yadav).pdf

Sumit Kumar yadav

GBSN - Microbiology (Unit 3)

GBSN - Microbiology (Unit 3)

GBSN - Microbiology (Unit 3)

Factory Acceptance Test( FAT).pptx .

Factory Acceptance Test( FAT).pptx .

Factory Acceptance Test( FAT).pptx .

Poonam Aher Patil

FAIRSpectra - Enabling the FAIRification of Analytical Science

FAIRSpectra - Enabling the FAIRification of Analytical Science

FAIRSpectra - Enabling the FAIRification of Analytical Science

Forensic Biology & Its biological significance.pdf

Forensic Biology & Its biological significance.pdf

Forensic Biology & Its biological significance.pdf

rohankumarsinghrore1

Vip CALL GIRL IN Lonavala 9748763073❤CALL GIRLS IN ESCORT SERVICE❤CALL GIRL IN We are Providing :- ● – Private independent collage Going girls . ● – independent Models . ● – House Wife’s . ● – Private Independent House Wife’s ● – Corporate M.N.C Working Profiles . ● – Call Center Girls . ● – Live Band Girls . ●- Foreigners & Many More . Service type: 1.In call 2.out call 3. full Lip to Lip kiss 4.69 5.b-job without Condom 6. Hard Core sex & Much More. 7 Body to Body Touch 8 Kissing 9 Sucking Boobs and More 10 Enjoy by Hand 11 Relax By Oral 12 Sex with Happy Ending • In Call and Out Call Service • 3* 5* 7* Hotels Service • 24 Hours Available • Indian, Russian, Punjabi, Kashmiri Escorts • Real Models, College Girls, House Wife, Also Available • Short Time and Full Time Service Available • Hygienic Full AC Neat and Clean Rooms Avail. In Hotel 24 hours • Daily Escorts Staff Available • Minimum to Maximum Range Available.c

Vip profile Call Girls In Lonavala 9748763073 For Genuine Sex Service At Just...

Theoretical predictions and observational data indicate a class of sub-Neptune exoplanets may have water-rich interiors covered by hydrogen-dominated atmospheres. Provided suitable climate conditions, such planets could host surface liquid oceans. Motivated by recent JWST observations of K2-18 b, we self-consistently model the photochemistry and potential detectability of biogenic sulfur gases in the atmospheres of temperate sub-Neptune waterworlds for the first time. On Earth today, organic sulfur compounds produced by marine biota are rapidly destroyed by photochemical processes before they can accumulate to significant levels. Domagal-Goldman et al. suggest that detectable biogenic sulfur signatures could emerge in Archean-like atmospheres with higher biological production or low UV flux. In this study, we explore biogenic sulfur across a wide range of biological fluxes and stellar UV environments. Critically, the main photochemical sinks are absent on the nightside of tidally locked planets. To address this, we further perform experiments with a 3D general circulation model and a 2D photochemical model (VULCAN 2D) to simulate the global distribution of biogenic gases to investigate their terminator concentrations as seen via transmission spectroscopy. Our models indicate that biogenic sulfur gases can rise to potentially detectable levels on hydrogen-rich water worlds, but only for enhanced global biosulfur flux (20 times modern Earth’s flux). We find that it is challenging to identify DMS at 3.4 μm where it strongly overlaps with CH4, whereas it is more plausible to detect DMS and companion byproducts, ethylene (C2H4) and ethane (C2H6), in the mid-infrared between 9 and 13 μm. Unified Astronomy Thesaurus concepts: Exoplanet atmospheres (487); Exoplanet

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

GBSN - Microbiology (Unit 2)

GBSN - Microbiology (Unit 2)

GBSN - Microbiology (Unit 2)

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

FarihaAbdulRasheed

Context. WASP-76 b has been a recurrent subject of study since the detection of a signature in high-resolution transit spectroscopy data indicating an asymmetry between the two limbs of the planet. The existence of this asymmetric signature has been confirmed by multiple studies, but its physical origin is still under debate. In addition, it contrasts with the absence of asymmetry reported in the infrared (IR) phase curve. Aims. We provide a more comprehensive dataset of WASP-76 b with the goal of drawing a complete view of the physical processes at work in this atmosphere. In particular, we attempt to reconcile visible high-resolution transit spectroscopy data and IR broadband phase curves. Methods. We gathered 3 phase curves, 20 occultations, and 6 transits for WASP-76 b in the visible with the CHEOPS space telescope. We also report the analysis of three unpublished sectors observed by the TESS space telescope (also in the visible), which represents 34 phase curves. Results. WASP-76 b displays an occultation of 260±11 and 152±10 ppm in TESS and CHEOPS bandpasses respectively. Depending on the composition assumed for the atmosphere and the data reduction used for the IR data, we derived geometric albedo estimates that range from 0.05 ± 0.023 to 0.146 ± 0.013 and from <0.13 to 0.189 ± 0.017 in the CHEOPS and TESS bandpasses, respectively. As expected from the IR phase curves, a low-order model of the phase curves does not yield any detectable asymmetry in the visible either. However, an empirical model allowing for sharper phase curve variations offers a hint of a flux excess before the occultation, with an amplitude of ∼40 ppm, an orbital offset of ∼−30◦ , and a width of ∼20◦ . We also constrained the orbital eccentricity of WASP-76 b to a value lower than 0.0067, with a 99.7% confidence level. This result contradicts earlier proposed scenarios aimed at explaining the asymmetry observed in high-resolution transit spectroscopy. Conclusions. In light of these findings, we hypothesise that WASP-76 b could have night-side clouds that extend predominantly towards its eastern limb. At this limb, the clouds would be associated with spherical droplets or spherically shaped aerosols of an unknown species, which would be responsible for a glory effect in the visible phase curves.

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

(Vivek)Call Us, 8448380779,Call girls in Delhi NCr – We Offer best in class call girls. escort Service At Affordable Price At low Rate with Space Night 8000 We Are One Of The Oldest Escort and Call girls Agencies in Delhi. You Will Find That Our Female Escorts Are Full Of Fun, Sexy And They Would Love Enjoy Your Company. We Have A Fantastic Selection Of Escort Ladies Available For In-Calls As Well As Out-Calls. Our Escorts Are Not Only Beautiful But All Have Great Personalities Making Them The Perfect Companion For Any Occasion. In-Call:- You Can Come At Our Place in Delhi Our place Which Is Very Clean Hygienic 100% safe Accommodation. Out-Call:- You have To Come Pick The Girl From My Place We Are Also Provide Door Step Services (Delhi Ncr, Noida, Gurgaon, Faridabad, Ghaziabad Note:- Pic Collectors Time Passers Bargainers Stay Away As We Respect The Value For Your Money Time And Expect The Same From You Hygienic:- Full Ac room And Clean Rooms Available In Hotel 24 * 7 Hourly In Delhi NCR More Details, With WhatsApp Number, +91-8448380779

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

Delhi Call girls

Call Girls In Safdarung Enclave Arjun Nagar Whatsapp +91 9654467111 Delhi ⛟ Open 24 Hrs, ☎ Booking Short 2000 Night 6000 ALL HOME/HOTEL SERVICE DOORSTEP SERVICE IN/CALL & OUT/CALL SERVICE WITH MANY OPTIONS AVAILABLE DELHI GURGAON & NOIDA SERVICE IN REASONABLE RATES FROM LOW TO HIGH PROFILE STAFF’S. Call Girl Number~24X7~Call Girl Services, New Delhi, Delhi OutCall Rate Call Girl Mahipalpur,Call Girl Connaught Place,Call Girl Nehru Place,Call Girl Chanakyapuri,Call Girl Paharganj,Call Girl Dhaula Kuan,Call Girl Moti Bagh,Call Girl Karol Bagh,Call Girl Greater Kailash,Call Girl Naraina, Call Girl Katwaria Sarai,Call Girl Janakpuri,Call Girl Kalkaji,Call Girl Lajpat Nagar,Call Girl Palam,Call Girl Malviya Nagar,Call Girl Mehrauli,Call Girl Govindpuri,Call Girl Sarojini Nagar ,Call Girl Neb Sarai,Call Girl South Ex,Call Girl Munirka,Call Girl Saket,Call Girl Chattarpur

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

fruit fly, this slide mainly made for pumpkin fruit fly, this is also known as drosophila melangastor, this type of fruit fly destroyed the mainly vegetables crops. if you want to known examples this types of fly which is destroy the pumpkin, tomato, brinjal, potato, bottle guard, ridge guard, bitter guard, cucumber, water melon, musk melon, bean, long bean and other many vegetables which has fruits. they distryed fruit fly. thank you...

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

Último (20)

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

❤Jammu Kashmir Call Girls 8617697112 Personal Whatsapp Number 💦✅.

Clean In Place(CIP).pptx .

Clean In Place(CIP).pptx .

Clean In Place(CIP).pptx .

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

Pulmonary drug delivery system M.pharm -2nd sem P'ceutics

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

+971581248768>> SAFE AND ORIGINAL ABORTION PILLS FOR SALE IN DUBAI AND ABUDHA...

Zoology 5th semester notes( Sumit_yadav).pdf

Zoology 5th semester notes( Sumit_yadav).pdf

Zoology 5th semester notes( Sumit_yadav).pdf

GBSN - Microbiology (Unit 3)

GBSN - Microbiology (Unit 3)

GBSN - Microbiology (Unit 3)

Factory Acceptance Test( FAT).pptx .

Factory Acceptance Test( FAT).pptx .

Factory Acceptance Test( FAT).pptx .

FAIRSpectra - Enabling the FAIRification of Analytical Science

FAIRSpectra - Enabling the FAIRification of Analytical Science

FAIRSpectra - Enabling the FAIRification of Analytical Science

Forensic Biology & Its biological significance.pdf

Forensic Biology & Its biological significance.pdf

Forensic Biology & Its biological significance.pdf

Vip profile Call Girls In Lonavala 9748763073 For Genuine Sex Service At Just...

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

GBSN - Microbiology (Unit 2)

GBSN - Microbiology (Unit 2)

GBSN - Microbiology (Unit 2)

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

COST ESTIMATION FOR A RESEARCH PROJECT.pptx

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

Human & Veterinary Respiratory Physilogy_DR.E.Muralinath_Associate Professor....

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

Connaught Place, Delhi Call girls :8448380779 Model Escorts | 100% verified

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

pumpkin fruit fly, water melon fruit fly, cucumber fruit fly

The handbook of hearing and the effects of noise physiology psychology and public health pdf

1. The Handbook of Hearing and the Effects of Noise: Physiology, Psychology, and Public Health Karl D. Kryter

2. Publisher : Emerald Group Publishing Limited Release Date :

3. ISBN : 0124274552 Author : Karl D. Kryter Download Here http://eap-books.club/readonline/?item=0124274552&lan=en

4. The Handbook of Hearing and the Effects of Noise presents the methods and the results of research for quantitatively describing the major attributes of hearing and the effects of sound and noise on people. It contains information of interest to government decision makers, architects, and engineers concerned with criteria, guidelines, and standards for acceptable and safe levels of sound and noise. Download Here http://eap-books.club/readonline/?item=0124274552&lan=en

5. Download Here http://eap- books.club/readonline/?item=0124274552&lan=en Powered by TCPDF (www.tcpdf.org)