CORONAVIRUS-2019
SARS-COV-2, novel coronavirus, or COVID-19
SERVICES:
Sanitizing-Disinfection-Sterilization Safe, Super-Fast, Flexible, Effective and Green
We have completed the GLOBAL BIORISK ADVISORY COUNCIL (GBAC) courses, educating us, your cleaning professionals, how to prepare for, respond to and recover from Coronavirus and other biohazards in the workplace and in your home. Were instructed in Sanitation, Disinfecting, Cleaning; plus infection and contamination control measures for infectious disease outbreak situations, such as the novel coronavirus (SARS-COV-2).
High Temperature Drying process is raising the ambient air temperature between 105F and 135F with state-of-the-art electric heaters; then using high-grade industrial fans for air movement and vapor removal. Our process represents a Super-Fast way to implement a new understanding of the Science of Drying that will allow us, “Your Heat Treatment Experts” to dry wet structures at least five times as fast as ever before! “Your Heat Treatment Experts” will completely dry Class 1 and 2 water losses involving up to 4,000 sq. ft. in just several (6-8) hours or faster! Class 3 and 4 losses will take longer to dry, less than 24 hours, but will still dry dramatically faster than conventional drying systems, 5-7 days using just fans and dehumidifiers.
For mold and other microbes, “YOUR HEAT TREATMENT EXPERTS” require that temperatures throughout the treatment area reach 120 to 135 degrees Fahrenheit and remain at or above those temperatures for a minimum of six to eight hours. “YOUR HEAT TREATMENT EXPERTS” may vary temperatures and durations based on the level of contamination, moisture present, and complexity of the structure.
Heat Treatments: The Coronavirus is easily killed at 132.8F (56 Degrees Celsius) for 30 minutes. We use the best commercial Electric Heating Equipment to raise the ambient air temperatures up to 135F. Your area will be up to Lethal Temperatures within 30 minutes to 120 minutes depending on how large the area is that we are heat treating. We then hold these temperatures for 1-2 hours with fans moving the HOT LEATHAL AIR to all areas. Then your CORONAVIRUS FREE, and back into your Home Sweet Home, within hours.
Hydroxyl Generator: Hydroxyl Generator is a Space Age Technology… creating Hydroxyls which are naturally formed by the reaction of UV light from the sun disassembling water vapor (H20) to get a hydrogen atom and oxygen (O2) to get an oxygen atom which are combined together to form the hydroxyl radical (*OH). This Hydroxyl Radical floats in the air coming in contact to Kill and Exterminates VIRUSES, MOLD, POISONOUS GASES, BACTERIA AND ELIMINATES TOXIC ODORS too. Over time these Hydroxyl Radicals will fall from the air to cover surfaces.
I would say it’s like creating Hydrogen Peroxide from the air and releasing it back into the air to KILL VIRUSES, MOLD, POISONOUS GASES, BACTERIA and Eliminates Toxic Odor too. From early results, Hydrogen Peroxide has shown to be one of the best chemicals to use when killing the Coronavirus.
CHEMICAL Fogging/ Spray: We use EPA certified Coronavirus Killing Chemicals for Fogging and/or Spraying your property to Sanitize-Disinfect Coronavirus, also known as SARS-COV-2, in homes and business such as long term care facilities, nursing homes, restaurants, gas stations, auto repair shops, group homes, grocery stories, along with cars, buses, and so much more.
Give us a call and we’ll get on the ball to save your day.
SARS-COV-2 or COVID-19
Coronavirus Cleaning
Coronavirus Disinfecting
Coronavirus Sanitization
Coronavirus Emergency response
Biohazard cleanup
Odor removal
Eliminate Odors
Equipment Rental:
Titan 4000
Treatment area is 40,000 cubic feet Maximum, with a built in fan out put of 5,000 CFM max.
Titan 2000
Treatment area is 20,000 cubic feet Maximum, with a build in fan output.
Titan 1000
Treatment area is 10,000 cubic feet Maximum, with a built in fan output.
Hydroxyl Maximizer
Moisture/humidity: The higher the humidity is in the treatment area the more hydroxyls will be produced and the better/quicker the hydroxyl generator will do the job. Hydroxyls are not temperature sensitive and like higher humidity which is the opposite of ozone which prefers cooler less humid conditions. 60%+ humidity is preferred for optimal hydroxyl generator performance.
Humidifier
Large Fan (Industrial grade)
High volume of air movement optimize Hydroxyl treatments, since hydroxyls live less than two seconds. It is necessary and beneficial to have as much air movement as possible to move the hydroxyls out of the machine and as far away as possible in the two second time allotment. 5,000+ CFM will do a much better job than 500 to 600 CFM.
Small fan
Filter Queen Defenders
Air Purifiers 99.9%
Filter Queen Defender Air Purifier 99.99% uses proven technology to create a cleaner, healthier home environment that is protected from harmful pollutants such as pollen, mold, bacteria, viruses, pet dander, dust mites, smoke particles, cooking odors, and airborne chemicals, without producing harmful ozone. Filtration: Another feature to look for in a hydroxyl generator is good filtration to help remove the oxidized particles and microbes from the air in the treatment area.
We offer Delivery to the metro area and pick up with your order
CORONAVIRUS-2019 NEWS and INFO
SARS-COV-2 or COVID-19
STUDY FINDS CORONAVIRUS COULD BE MORE CONTAGIOUS THAN PREVIOUSLY THOUGH. Check out the video below
April 26, 2020
The Science Behind the Coronavirus, Series II
In this second installment of our “The Science Behind the Coronavirus” series, Dr. Patrick Soon-Shiong, the executive chairman of the Los Angeles Times, continues his examination of the ways the scientific community is taking up the battle against COVID-19. Soon-Shiong (MD, MBBCh, MSc, FRCS (C), FACS) begins his presentation with a warning: The virus is continuing to mutate and is here to stay. But, Soon-Shiong adds, there is hope. Over an introduction and six parts, Soon-Shiong explains how scientists around the world are considering treating patients suffering from stages of COVID-19. Finally, Soon-Shiong breaks down the medical concepts researchers are pondering as they search for a vaccine. Soon-Shiong is a surgeon and scientist who has spent his career studying the human immune system to fight cancer and infectious diseases. He is also the chairman and chief executive of NantWorks and the owner of or investor in a number of companies, including ImmunityBio and NantKwest, which are currently researching immunotherapies for COVID-19. SUBSCRIBE FOR MORE VIDEOS AND NEWS…. Watch this great video
Heat and UV Irradiation kills Coronavirus, read the whole story below
Stability of SARS coronavirus in human specimens and environment and its sensitivity to heating and UV irradiation. https://www.ncbi.nlm.nih.gov/pubmed/14631830
OBJECTIVE:
The causal agent for SARS is considered as a novel coronavirus that has never been described both in human and animals previously. The stability of SARS coronavirus in human specimens and in environments was studied.
METHODS:
Using a SARS coronavirus strain CoV-P9, which was isolated from pharyngeal swab of a probable SARS case in Beijing, its stability in mimic human specimens and in mimic environment including surfaces of commonly used materials or in household conditions, as well as its resistance to temperature and UV irradiation were analyzed. A total of 10(6) TCID50 viruses were placed in each tested condition, and changes of the viral infectivity in samples after treatments were measured by evaluating cytopathic effect (CPE) in cell line Vero-E6 at 48 h after infection.
RESULTS:
The results showed that SARS coronavirus in the testing condition could survive in serum, 1:20 diluted sputum and feces for at least 96 h, whereas it could remain alive in urine for at least 72 h with a low level of infectivity. The survival abilities on the surfaces of eight different materials and in water were quite comparable, revealing reduction of infectivity after 72 to 96 h exposure. Viruses stayed stable at 4 degrees C, at room temperature (20 degrees C) and at 37 degrees C for at least 2 h without remarkable change in the infectious ability in cells, but were converted to be non-infectious after 90-, 60- and 30-min exposure at 56 degrees C, at 67 degrees C and at 75 degrees C, respectively. Irradiation of UV for 60 min on the virus in culture medium resulted in the destruction of viral infectivity at an undetectable level.
CONCLUSION:
The survival ability of SARS coronavirus in human specimens and in environments seems to be relatively strong. Heating and UV irradiation can efficiently eliminate the viral infectivity.
In aerosolized form, human coronavirus 229E is generally less stable in high humidity [12]. The environmental stability of SCoV was previously unknown and this information is clearly important for understanding the mechanisms of transmission of this virus in a hospital and community setting.
In the present study, we have demonstrated that SARS CoV can survive at least two weeks after drying at temperature and humidity conditions found in an air-conditioned environment. The virus is stable for 3 weeks at room temperature in a liquid environment but it is easily killed by heat at 56°C for 15 minutes [9]. This indicates that SARS CoV is a stable virus that may potentially be transmitted by indirect contact or fomites. These results may indicate that contaminated surfaces may play a major role in transmission of infection in the hospital and the community.
https://www.hindawi.com/journals/av/2011/734690/
First data on stability and resistance of SARS coronavirus compiled by members of WHO laboratory network https://www.who.int/csr/sars/survival_2003_05_04/en/
The below table provides the first compilation of data on resistance of the SARS Coronavirus against environmental factors and disinfectants. This information has been provided by Members of the WHO multi-center collaborative network on SARS diagnosis. More detailed information on methods utilized and material used is being compiled and will be available shortly. The major conclusions from these studies are:
Virus survival in stool and urine
- Virus is stable in faeces(and urine) at room temperature for at least 1-2 days.
- Virus is more stable (up to 4 days) in stool from diarrhea patients (which has higher pH than normal stool).
Disinfectants
- Virus loses infectivity after exposure to different commonly used disinfectants and fixatives.
Virus survival in cell-culture supernatant
- Only minimal reduction in virus concentration after 21 days at 4°C and -80°C.
- Reduction in virus concentration by one log only at stable room temperature for 2 days. This would indicate that the virus is more stable than the known human coronaviruses under these conditions.
- Heat at 56°C kills the SARS coronavirus at around 10000 units per 15 min (quick reduction).
First data on stability and resistance of SARS coronavirus compiled by members of WHO laboratory network
The below table provides the first compilation of data on resistance of the SARS Coronavirus against environmental factors and disinfectants. This information has been provided by Members of the WHO multi-center collaborative network on SARS diagnosis. More detailed information on methods utilized and material used is being compiled and will be available shortly. The major conclusions from these studies are:
Virus survival in stool and urine
- Virus is stable in faeces(and urine) at room temperature for at least 1-2 days.
- Virus is more stable (up to 4 days) in stool from diarrhea patients (which has higher pH than normal stool).
Disinfectants
- Virus loses infectivity after exposure to different commonly used disinfectants and fixatives.
Virus survival in cell-culture supernatant
- Only minimal reduction in virus concentration after 21 days at 4°C and -80°C.
- Reduction in virus concentration by one log only at stable room temperature for 2 days. This would indicate that the virus is more stable than the known human coronaviruses under these conditions.
- Heat at 56°C kills the SARS coronavirus at around 10000 units per 15 min (quick reduction).
Fixatives (for use in laboratories only)
MINNESOTA COMPANY MAKING SOME NEWS
Minnesota BBQ Co. using Hydroxyls
I’m curious what everyone thinks of this. It’s a hydroxyl generator. Supposedly it kills 99.9% VOCs. Still untested against covid, but has been proven effective against similar viruses. Would you feel more safe, less safe, or indifferent about something like this helping to make an enclosed environment safer? Click on the link below to check it out.
https://www.facebook.com/MinnesotaBBQCo/
A Rapid Test For The Detection of COVID-19 (Coronavirus) Distributed by Premier Biotech
COVID-19 (Corona Virus Disease) is the infectious disease caused by the most recently discovered coronavirus. This new virus and disease were unknown before the outbreak began in Wuhan, China, in December of 2019. The COVID-19 IgG and IgM rapid test manufactured by Hangzhou Biotest Biotech, Co., Ltd. and distributed by Premier Biotech is used for the qualitative detection of SARS-CoV-2 antibodies in whole blood, serum, or plasma. The procedure is easy to administer and offers results at 10 minutes that remain valid for 20 minutes. Contact us to request additional information:
https://premierbiotech.com/innovation/covid-19/
MN photographer shines light on small businesses during COVID-19
A Minneapolis photographer is out of work because of COVID-19. She’s using this time to spotlight other small businesses and how the public can support them. https://www.kare11.com/article/news/local/mn-photographer-shines-light-on-small-businesses-during-covid-19/89-d4ad59c8-ae70-46c0-b0c2-efbccdcbd626
roved Chinese coronavirus antibody tests being use
Minnesota company using Hydroxyls in their business, read the whole story here.
https://kstp.com/business/st-paul-laundromat-using-uv-rays-to-combat-covid-19/5705409/?cat=12685
“Everybody is scared about COVID-19, and we are too,” Dillon said. “We had to figure out what can we do about it. Everybody needs clean clothes. Everybody deserves clean clothes. So what better way to do it than bring something that can clean these clothes better than they’ve ever been cleaned before to a laundromat setting?”
Minnesota BBGleast 2 states
Some Chinese-made COVID-19 antibody tests being used in the U.S. were not approved by China’s FDA. China has now barred their export.
CORONAVIRUS TESTING DEVICE that can remotely DETECT CORONAVIRUS in 5 seconds.
Watch the videos below
PEAK PROSPERITY
By Chris Martenson
with the myriad ways in which it can wreak havoc in the human body.
The latest surprise is that the virus may have a completely second pathway, separate from targeting ACE2 receptors, for attack.
New research indicates that, similar to HIV, covid-19 compromises the immune system’s T-cells and “turns off” their protective function, allowing the virus to replicate without interference.
And if that isn’t unwelcome enough, a new study reports that numerous patients infected with covid-19 show damage well beyond just the lungs. Described as a “full body assault”, notable damage to the heart, liver and other organs is also being observed. Check out the whole story below
https://www.peakprosperity.com/the-coronavirus-has-a-second-route-of-attack/
Microbial Warrior™ Workshop
PROGRAM SUMMARY:
This course teaches cleaning professionals to prepare for, respond to and recover from biohazards in the workplace. Participants will learn infection and contamination control measures for infectious disease outbreak situations such as the novel coronavirus (SARS-CoV-19)
https://online.issa.com/issassa/ecssashop.show_product_detail?p_mode=detail&p_product_serno=1515
A Fast Track to Zero Environmental Pathogens Using Novel Ionized Hydrogen Peroxide Technology
February 1, 2011
By Rod Webb, JD
Room disinfection using hydrogen peroxide (HP) “fogging” methods has been shown to eradicate or significantly reduce methicillin-resistant Staphylococcus aureus (MRSA),1-2 Clostridium difficile (C. diff),3-4 vancomycin-resistent Enterococci (VRE),5 and Acinetobacter baumanni6 in healthcare settings. These fogging methods include “dry gas,”2 “dry mist,”4 “microcondensation,”1, 3, 5 and “activated,”6 also known as ionized hydrogen peroxide (iHP). Hydrogen peroxide (HP) fogging decontamination has recently gained notice in healthcare institutions due to its many benefits such as superior efficacy, safety and materials compatibility. HP fogging can be an essential intervention to rapidly reduce transmission of healthcare-associated pathogens.10 One hospital study reports a 53 percent reduction of hospital-wide incidence of C. diff using HP fogging.3
Despite the benefits of HP fogging, its use has been limited to isolated outbreaks and not widely adopted for routine disinfection of patient care areas. One reason is that CDC guidelines recommend against using disinfectant fogging methods.7-8 However, these guidelines contemplated fogging using quaternary ammonia, phenolics, formaldehyde, hypochlorite solutions or other disinfectants that are harmful, not effective, and/or impractical for healthcare environments.9 Additionally, long process times, cost of equipment and inconvenient operation have been barriers.15
The prevailing approach for reducing environmental surface pathogens is programmatic manual cleaning focused on high-touch surfaces, but this approach has practical challenges as well:
– Not all environmental surfaces are targeted, and even cleaning of high-touch surfaces is susceptible to human error. Interventions not effectively targeting all environmental surfaces leave reservoirs of pathogens.17
– Training and oversight in an increasingly overburdened, under-resourced work environment may prove daunting and difficult to sustain. Low hand hygiene compliance is a current example of just how difficult. One study reports only a 50 percent compliance rate in the U.S. even after years of publicity, education, training, product innovations and other efforts.18
– There is no data showing the impact of cleaner surfaces to environmental pathogen levels or their transmission.11-12
– There is no cost-benefit analysis showing the financial value of programmatic manual cleaning.
As HP fogging leaves virtually no reservoir of pathogens on treated surfaces, and as equipment and processes are optimized for faster process times, reduced disruption and lower-cost, broad adoption as a valued intervention will follow.
The 2003 Guidelines for Environmental Infection Control in Health-Care Facilities from the Centers for Disease Control and Prevention (CDC) states, “. cleaning and disinfecting environmental surfaces as appropriate is fundamental in reducing their potential contribution to the incidence of healthcare-associated infections.”7 This statement is made in the context of applying to all environmental surfaces to minimize transmission of infections by hand. However, high-touch housekeeping surfaces (e.g., doorknobs, bedrails, light switches, wall areas around the toilet in the patients room, and the edges of privacy curtains) should be cleaned and/or disinfected more frequently than [other] surfaces.”7 At the time of drafting these guidelines, it was believed contaminated surfaces did not contribute significantly to healthcare-associated infections.7 Recent studies indicate otherwise, and the industry struggles with what type of cleaning is “appropriate,” particularly for high-touch surfaces, and how is cleanliness assessed. So far, manual wipe cleaning is the prevailing practice and quality is assessed by visual observation. More recently, programmatic regimens with covert, qualitative marking methods have been developed. The limitation of either method is a visually clean surface does not necessarily equate to a pathogen clean surface or reduction in infection rates.11, 13
Programmatic regimens produce cleaner surfaces with less variation in controlled studies, but questions remain if they can be implemented for broad, measurable and sustained impact in an increasingly regulated and understaffed industry.11 Process control is a serious practical consideration. Further, there most certainly is an associated cost that is not documented and, perhaps more importantly, because these programs only focus on high-touch surfaces and are not 100 percent effective even then, a reservoir of pathogens will remain and can survive on surfaces for months.17, 19 So while surfaces are cleaner, there may be little correlation to reduced infection rates.
In contrast, HP fogging is highly effective against known healthcare-related pathogens and is used to safely disinfect all environmental surfaces. Equipment today is easily programmed and reliably operated with minimal training and supervision. Surface coverage is complete and uniform and is immediately confirmed using chemical indicator strips that turn color upon exposure to HP. These characteristics make HP fogging a low-risk alternative to programmatic cleaning regimens. Costs are being reduced as more competitors enter the market, equipment is optimized, and process times are shorter.
HP fogging was developed by the American Sterilizer Co. as a “dry gas” process in the late 1970s, and in 1989, successfully decontaminated an ultracentrifuge.14 STERIS Corp. acquired the technology and continues to offer various products using the dry gas process. In the late 1990s, Bioquell developed a “microcondensation” decontamination process and today offers the Clarus line of products. The “dry gas” and “microcondensation” processes have dominated the room decontamination market for the last decade, primarily in the pharmaceutical market. Sterinis provides a “dry mist” method and is seeking EPA approval of its chemical for launch in the U.S by Advanced Sterilization Products. SixLog Corp. offers the ionized hydrogen peroxide process, also known as iHP. All processes are highly effective at reducing various healthcare-associated pathogens by 91 percent to 100 percent.1-4, 6 While there are differences in the disinfection delivery methods of the various systems, the high efficacy of each process is likely more an indication of the effectiveness of HP as a biological killing agent than the process by which it is generated and delivered to the surface. The substantive differences between the processes are the extent to which they are optimized in terms of cost, convenience, reliability of operation, and process time.
Process time and cost are the primary distinguishing characteristics of the various fogging methods. Since process time impacts cost and operational convenience, much effort has been expended to reduce process time, which currently stands at two to four hours or more depending on the room size and method used. Most facilities desire a room turnover time of less than one hour (unpublished data) although at least one study indicates this aggressive schedule is not adhered to currently and some rooms in a busy hospital stay vacant for hours after cleaning and available for occupancy.15
iHP is the most recently developed method, and it achieves a compelling balance between process times of 1 to 1.5 hours and an efficacy of 99.98 percent reduction.6 However, additional investigation should be performed to confirm if this balance is maintained across the spectrum of pathogens in healthcare settings. A review of how iHP works provides a better understanding of this performance.
Similar to all hydrogen peroxide fogging methods, iHP starts with a liquid solution that is flowed under pressure through a nozzle device to create a fine mist sprayed into the air. Unlike other methods, there is no need to pre-condition the area, which adds to the process time. The mist must stay suspended in the air in order to uniformly disperse to exposed surfaces. iHP uses the novel process of ionization to rapidly disperse the disinfectant. Immediately after the mist droplets exit the nozzle and before they become airborne, the droplets pass through a cold plasma arc created between two high energy electrodes at 17,000 volts. This causes the droplets to become ionized, or charged with the same polarity. Ionizing causes the droplets to be mutually repulsive, like trying to attach the same-polarity ends of magnets together, which will never touch, and, in fact, actively move away from each other in a repulsive action. By the same token, the droplets become attracted to opposite polarity surfaces floating in the air or settled on surfaces. Continuing with the analogy, the droplets act like the opposite poles of magnets, they actively seek the other surface. If the surface happens to be a microorganism like a cell, spore or fungi, the droplet attaches to it, whereby the hydrogen peroxide oxidizes the walls exposing the nuclei, and kills it on contact. One advantage of iHP, therefore, is the active manner and speed with which the mist droplets are dispersed to surfaces.
A second effect of ionizing hydrogen peroxide is the acceleration of the activating, breaking apart or disassociation of the constituent antimicrobial components from the hydrogen peroxide. Activation creates one or more highly reactive antimicrobial agents such as hydroxyl radicals, reactive oxygen species, reactive nitrogen species, ozone and ultraviolet. These agents kill the microorganism. The more agents that are created by the activation process, the more effective the killing action is. Hydrogen peroxide activates naturally upon exposure to oxygen, or it can be activated chemically using peracetic acid or other chemical, but these reactions take time and they may not create a high number of these antimicrobial agents. iHP activation takes place in about one second and creates all of the antimicrobial agents in high concentrations. While it does take time for the iHP droplets to travel from the nozzle to exposed surfaces and uniformly cover them, the microorganisms are killed upon contact and additional time is not needed for natural or chemical activation to take place.
All HP fogging methods require aeration of the treated area after disinfection to reduce the hydrogen peroxide concentration below regulated levels. iHP offers speed advantages here as well. Because the activation process for iHP is fast and efficient, the maximum concentration of hydrogen peroxide in the treated space during the process is very low at approximately 200 ppm or less. The lower this concentration of hydrogen peroxide, the less time needed for aeration. Aeration is achieved in most healthcare settings by circulating the room air through activated carbon media to capture airborne residual hydrogen peroxide. After aeration, the room can be occupied.
HP fogging provides high efficacy for the disinfection of healthcare-related pathogens on all exposed environmental surfaces. Historically, its use has been limited for disinfection of critical rooms and equipment after a confirmed outbreak as a control intervention but has not proven feasible for routine room disinfection due to long process times. Recently, however, new methods like iHP offer faster processing with high efficacy and reduced cost. As such, HP fogging can be an effective prevention strategy for routine disinfection of patient care areas. Equipment operation is automated through touch screen computer control and coverage is verified by chemical indicators placed on surfaces which turn color upon exposure to the HP mist. The process is virtually fail safe, reliable and, once integrated into facility operations, requires little oversight.
One disadvantage of HP fogging is that the room cannot be occupied. This creates a challenge when disinfecting double occupancy rooms after discharge of one patient and not the other. Possible solutions include coordinated planning of discharge schedules to minimize single occupancy of double rooms, moving the remaining patient to another area while the process is performed, sealing the vacant area from the occupied area by impermeable screens during fogging, or performing manual disinfection in these limited cases. Further investigation of these or other options is warranted.
Visual organic contamination must be removed from the surface to ensure adequate contact by the hydrogen peroxide disinfectant fog to microorganisms. It is expected that current housekeeping cleaning efforts are sufficient as some surface contamination is tolerable without impacting efficacy, but adequacy of current cleaning levels should be confirmed through additional investigation.
Further investigation should be conducted to compare the long-term feasibility of hydrogen peroxide fogging versus programmatic manual cleaning regimens. Investigation should compare direct and indirect costs of developing, implementing and sustaining each approach, the effect on pathogen transmission and infection rates, and cost savings resulting from the reduction, if any, in infection rates.
Rod Webb is corporate development manager for Astro Pak Corp. He has 15 years of experience in contamination control practices and testing technologies in aerospace, hydraulics, automotive, semiconductor and laser industries and has authored numerous articles on contamination control. He has a law degree from Oklahoma City University School of Law and an economics degree from Southwestern Oklahoma State University. Astro Pak Corporation is the parent company of SixLog Corp.