Use this form to estimate the brake horsepower required. Brake horsepower is the power out of the drive motor, and the power into the water pump and is how most pumps and drive motors are specified
UV treatments allow the quality of stored water to be maintained. So the water doesn’t turn green.
To achieve this, the UV reactor must be correctly sized. The most important criterion for algae treatment is the dose applied:
-
30 mJ/cm²
The next step is to circulate the water through the UV reactor.
In this configuration, good recirculation is essential. Size your pumping system according to the temperature of your water:
- Temperature / 2 = pumping time.
- Temperature > 28° = continuous operation
Example for a 100 m³ basin: for water at 22 degrees, the recommended recirculation time is 11 hours. The pumping rate is 100 / 11 = 9.1 m³/h.
Now you know the flow rate and dose to choose, all you have to do is fill in the form.
Moleaer nanobubble technology delivers oxygen throughout the water column, including at the sediment-water interface (bottom of the water column), with one of the highest transfer efficiencies validated by third-party testing. Unlike larger bubbles from conventional aeration that rise to the surface and burst, neutrally buoyant nanobubbles stay suspended in the water. This offers prolonged benefits, including sustained oxygen levels at the sediment-water interface, supporting overall lake health.
If you're a lake or pond manager or owner, you're probably all too familiar with the frustrating problems that can plague your water body. Nanobubble technology is an independently validated and proven tool that can help keep your water clear, healthy and more resilient to these problems.
The Minimal Secure Transport Protocol
By Dipl. Ing.(BA) Frank Gerlach (frankgerlach.tai@gmx.de)
The MST protocol has been designed in order to create a building block for a more secure computing landscape. The main design objective has been simplicity, which directly translates into high security, because simple programs are also easy to review and even prove correct in a mathematic sense. //
SplatMan_DK Ars Tribunus Angusticlavius
18y
8,304
Subscriptor++
Confy said:
Nutanix has Veeam support and HPE has Zerto support. I wonder what hypervisor Tesco chose.
Lot's of talk about this in the MSP chats around Europe (and I am a small MSP).
A very good bet is is KVM underneath a private-cloud stack that can handle 40K+ instances in 100+ locations in a fully automated fashion, using Infrastructure-as-code, and which includes baked-in options to run Kubernetes (the Tanzu subscription says so).
Who fits the bill:
Virtuozzo (very good VMWare replacement with K8S but too much proprietary stuff mixed in)
OCI (Oracle are also duchebags so unlikely)
Openstack vanilla (possible but unlikely given the focus on risk - managers want paid support)
RHSOSP (Red Hat OpenStack Platform - expensive but less than half the price of VMWare)
Canonical Charmed OpenStack (cheap and solid option - decent bet especially with Sunbeam for small local sites)
Apache Cloudstack (unlikely as few commercial options would provide support for "at a sprint" migration)
FishOS by Sardina (nice vanilla OpenStack with migration tool, support contract and remote ops but unlikely candidate due to small organizational size for Tescos taste)
Platform9 (cloud-based control plane for on-prem OpenStack and optimized for retail)
Theoretically fits the bill but with lots of re-work:
Rancher (K8S only - unlikely)
SUSE Harvester (Rancher but with KubeVirt VM capability - still unlikely but pretty cool and solid for a long term strategy)
Doesn't fit the bill:
Nutanix (supported by govtools; Veeam - but has good K8S)
HyperV (supported by govtools; Veeam - has no K8S)
Hyperscalers with cloud-only strategy; like Azure, AWS, GCP, Oracle Cloud (too expensive)
Proxmox (great for small shops - but finnicky and absolutely nowhere near Enterprise grade)
Other likely options (the MBA/C-suite approach):
Azure Hybrid environment with Azure Local for most workloads (on-prem) but some Hyperscaler mixed in; for example Azure. Migrating VMWare workloads is easy; doesn't save cost but keeps the few percentages of un-migratable legacy workloads spinning. Not everything in a hybrid environment is easily handled by Veeam and Zerto. But the bulk of VM instances would be covered. AKS on Azure Local for the K8S workloads for example; as well as various PaaS services.
The last option would often be the most appealing for the CIO, the CISO and the risk manager. It offers the easiest migration path - at least on paper. Price would be high but still significantly lower than inflated Broadcom prices; though the first few years of savings would be eaten by the accelerated transition costs.
Me, I'd go for Vanilla OpenStack and hire enough people to keep it running. The offering from Sardina is nice. It supports the accelerated transition requirement, and keeps the exit strategy clean and simple. It also ticks all the compliance boxes upper management wants because paid support is available.
Most vendor lock-in is with Microsoft or Nutanix. Least lock-in and easiest exit strategy is with Vanilla OpenStack, SUSE Harvester, Sardina FishOS, Canonical OpenStack.
Then again ... the suits in 40K+ employee companies rarely make the right tech-decisions. So who knows.
It will spill eventually. :)
With the clearance, Cuprina appears to be the only company to have FDA clearance to sell two species of fly larvae—and it’s abuzz with the potential to dominate the global maggot market.
The new species is Lucilia cuprina, or Australian sheep blowfly. It’s a close relative of Lucilia sericata, or the common green bottle fly, which is the fly species most often used for wound therapy, often called biosurgery or maggot debridement therapy (MDT). L. sericata is the only other fly with FDA clearance, which the agency first granted in 2004 to Ronald Sherman, who is now Cuprina’s Medical and Scientific Director. //
The two Lucilia species used in MDT are not considered parasitic. They mainly feast on carrion—though L. cuprina can cause a parasitic infestation in sheep called flystrike. In well-controlled MDT use, they feast only on dead and decaying tissue in wounds.
Perhaps the biggest reason MDT hasn’t taken off is that it’s not backed by solid evidence. While small, low-quality studies have indicated that maggot therapy is safe and effective at wound debridement, robust trials and evidence are lacking. As such, the treatment remains niche and is sometimes seen as a last resort for patients who refuse or are poor candidates for surgical or other standard debridement methods.
The hypothesis behind MDT is appealing if the maggots aren’t. To treat chronic, unhealing wounds, such as diabetic ulcers in the feet and legs, sterilized maggots are placed in the wound and secrete enzymes to liquify necrotic tissue. They then wiggle around to consume the slurry from all the nooks and crannies of a wound, which may be less painful and more efficient than surgical methods that try to slice out necrotic tissue. The maggots are thought to secrete various antibacterial compounds to ward off pathogenic bacteria and block biofilms from forming, overall preventing secondary infection. Finally, the activity of the maggots may also stimulate tissue regrowth. //
While MDT is intended to be a well-controlled treatment with larvae closely monitored and carefully removed at timed intervals, accidental myiasis carries the risk of having the maggots run amok and becoming difficult to extract. When this happens, doctors in California provide a simple solution: using strips of uncooked bacon to entice the maggots out.
This strategy worked for a woman with a poorly managed wound around her ear. After bacon strips were wrapped around her ear for 5 to 10 minutes, the maggots clung to the bacon and could be removed. The doctors note that they aren’t sure why it works—the bacon may block air, forcing the maggots to surface; the fats from the meat may increase their mobility; or the maggots just like bacon.
https://youtu.be/_AwzaZmRNsI?si=U_xxdMVhz9cFyySj
At work we triggered the update using the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecureBoot\AvailableUpdates set to 0x5944 method; and it honestly went surprisingly well. That said; it's 100% thinkpads and enterprise-line Dells here; and I have the unpleasant suspicion that the 'consumer motherboard that maybe gets an update if AGESA needs to be bumped' segment has some...under-tested DBX update functionality.
We've also had a veritable torrent of WU-delivered UEFI capsule BIOS updates go out; so the OEMs seem to be doing things on their end as well.
Luckily, to the best I've been able to pin anyone down on the question, failure to update just means not being protected according to what secure boot is designed to do, rather than the system just not booting; so we shouldn't have too large an epidemic of random home wintendos just falling over and dying; and realistically home users don't exactly //
just had to check for these in powershell:
$([System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI dbdefault).bytes) -match 'Windows UEFI CA 2023')
and
$([System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI db).bytes) -match 'Windows UEFI CA 2023')$([System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI db).bytes) -match 'Windows UEFI CA 2023')depending on which DB we have it stored (let me know if you know any other place). //
This script works pretty well if you don't know how to do it for yourself, or in your corporate environment. https://github.com/anomixer/Update-SecureBootCert
Beginning June 24, three certificates that cryptographically verify that each piece of firmware and software that loads during system boot will expire. The Microsoft-signed certificates are the linchpins of Secure Boot, a Microsoft-designed chain of trust. Secure Boot checks the digital signatures of all firmware that loads during system startup to ensure it originates from a trusted provider, such as the manufacturer of the motherboard the system runs on. //
For those of you that need to do a manual update, and you have the latest firmware, and Microsoft Security Centre states there isn't enough information to update your certificate automatically, you can go here and grab the certificates: Microsoft UEFI Guidancehttps://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-secure-boot-key-creation-and-management-guidance?view=windows-11#14-signature-databases-db-and-dbx
If you need a quick chart explanation of the different files, you can go Here.https://support.microsoft.com/en-gb/topic/windows-secure-boot-certificate-expiration-and-ca-updates-7ff40d33-95dc-4c3c-8725-a9b95457578e
If you need a certificate not on the guidance page, you can go to:
Microsoft Secure Boot Open Source Repository.
https://github.com/microsoft/secureboot_objects
Japan uses both 50Hz and 60Hz power frequencies due to historical and logistical reasons that date back to the early days of electrification in the country. In the 19th century, early power companies operated locally, leading to the establishment of a dual-frequency system.
Japan’s power grid is divided into two regions: Eastern Japan operates at 50 Hz, while Western Japan operates at 60 Hz. This division originates from the 1880s, when Tokyo imported 50 Hz generators from Germany, while Osaka chose 60 Hz equipment from the United States. //
The Fujigawa River and the southern border of Niigata Prefecture form the boundary between the two frequencies.
Why Do We Say C is Unsafe?
When the C programming language was developed circa 1970, computers had vastly smaller resources. The PDP-11, for example, came with 4KB of memory. Not gigabytes or megabytes – kilobytes. In such an environment, assembler was typically used, and C – sometimes known as “portable assembler” – is a very low-level language. With C, every bit counts, and one of its strengths is producing tight code and small executables, which is why it’s so often used for embedded systems. (Amusingly, what’s considered a “tiny embedded system” in 2026 would be a massive room-sized computer in 1970).
C is a wonderful language, but it comes with some limitations. These reflect the constraints that C was created within, but also the era. Many modern concepts simply hadn’t been invented yet.
Here are some limitations with C.
At the height of the Depression that Democrats call Great because it gave them power for 50 years, Yip Harburg wrote the lyrics to the song Brother, Can You Spare a Dime?
The song is sad but laborers were not the only victims of the worldwide collapse of the economy. Their bosses went broke.
I remember a lawyer friend about two decades ago comparing-and-contrasting Thomas and then-Court-mate and conservative icon – the late Antonin Scalia.
My friend pointed out that when Thomas and Scalia disagreed on a case? Thomas was correct – and Scalia incorrect.
Of course, their disagreeing didn’t happen a whole lot. But when it did? My friend called it: Thomas was right – Scalia was wrong. By that I mean: Thomas’ were the more Constitutional and conservative opinions.
These last 35 years, the real sardonic fun is when Thomas is outvoted on a case X-to-1. (X is usually 8, but there are occasional vacancies and recusals.)
As someone who wants DC to be drastically smaller and less offensive? I feel like an X-to-1 all the time. So I admire Thomas’ perpetual adherence to principle – the popularity of his opinion amongst his colleagues be darned.
Elon Musk’s Grok tells me there have been 52 cases where Thomas was just such a party of one. But I’m not sure if Grok caught last Thursday’s ruling. If not? This is #53…..
SCOTUS Delivers 8-1 Blow to AT&T, Verizon in $100M FCC Case:
It's amazing to me that a major corporation can purchase the rights to a very popular character you've known all your life, and then when they create something "for a modern audience," you fail to recognize the character at all.
Yet, people turned on "Clarkson's Farm," never having met any of the ancillary characters, and yet you feel like you've known them all your life. You relate to them in a big way, and you realize that even if the show didn't have half the budget it did, you'd probably still watch it because you actually feel something for these people.
A billion dollars doesn't buy relatability. Nobody wants safe and sterile.
When Steve and Olivia visited their friends in Liberia, they simply saw it as a fun trip. They had no desire to become global workers—the thought had not even crossed their minds.
“I had no intention of becoming a missionary. I don’t like to go to other places and do new things,” Steve said. “So we went, and it was not a fantastic trip.”
Between the intense heat, power outages, and a few difficult experiences, nothing about the visit made Steve and Olivia eager to return. And yet, God was quietly at work, preparing a path they never expected.
Water Chlorination and Chloramination Practices and Principles
Published by American Water Works Association
Publication Date 2006-07-01
Pages Count 188
This AWWA Manual of Water Supply Practices provides a complete information resource on the uses of chlorine and chloramines in municipal water treatment.
The manual focuses on chemical properties, disinfection mechanisms, feed rates, handling, storage, and safety. Recent developments in equipment, disinfection strategies, and techniques to minimize the formation of disinfection by-products is also covered in detail.
Appendices include dechlorination practices, CT values for inactivation of Giardia and viruses by free chlorine and other disinfectants, chlorine residual test methods, and disinfection of facilities.
Right after completing the purchase process, you will immediately get a digital copy of this handbook / manual / guide which is:
Not Locked
Printable
Multi-User
High Quality Scanned
$ 31.00
The Oppenheimer Alternative
Oppenheimer, Einstein, Feynman, Gödel and the rest of the great 20th-century physicists race against time to save the world
- #1 Locus bestseller
- Winner of the Helicon Award for Best Alternate History Novel of the Year
"This book has everything a reader wants from Sawyer: Well-drawn alternate history, rigorous SF thriller, social commentary, redemption narrative — The Oppenheimer Alternative reimagines one of the most influential lives of the twentieth century." —Analog
Books by Hugo and Nebula Award-Winner Robert J. Sawyer
Buying My Books
The U.S. military has likely been quietly broadcasting codes for its global encryption network using public GPS for nearly 20 years, turning each satellite into a hidden “numbers station,” according to Steven Murdoch…
That means every device that uses GPS has been receiving hidden government information for years, and nobody outside the military knew it until now.
The IPFIREWALL (IPFW) is a FreeBSD-sponsored firewall application. It is a stateful firewall written for the FreeBSD system and supports both IPv4 and IPv6. The IPFW is included in the basic FreeBSD installation; you just need to load the module through the '/etc/rc.conf' file to enable it.
This tutorial will show you how to set up the Basic IPFW Firewall on FreeBSD 12.0. We will first set up the firewall with the default rules provided by FreeBSD and then with a custom rule.