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4Sciences helps users find science-focused information, products, and tools. Built by search architects and domain specialists, the platform combines multiple indexes, specialized ranking algorithms, and AI systems to return relevant, credible science content. Use the site to search literature, news, vendors, data, and practical resources. Part of the 4SEARCH network of topic specific search engines.
Quantum Corridor and Toshiba Demonstrate First Cross-State QKD Over Live Commercial Fiber Network
just now (483+ words) Mohamed Abdel-Kareem is a Research Physicist at Global Quantum Intelligence, LLC, where he plays a pivotal role in tracking and synthesizing developments across the quantum computing industry. With a keen eye for detail, Mohamed specializes in gathering and analyzing quantum industry data, monitoring investment trends, and extracting critical insights from press releases and corporate announcements. His work provides high-level investors and stakeholders with accurate, unbiased, and actionable information on the latest advancements in quantum technologies, market dynamics, and strategic opportunities. Mohamed's contributions have been instrumental in shaping the company's quantum market research and strategic content. By maintaining a strong focus on technical accuracy and vendor neutrality, he ensures that the insights delivered are both reliable and relevant to the rapidly evolving quantum ecosystem. His expertise supports decision-makers in navigating the complexities of the quantum industry, enabling them to make informed,…...
Why const Doesn’t Freeze Your JavaScript Arrays
just now (346+ words) 1. Intro - The Common Confusion The answer lies in how JavaScript handles variables and references. Once you see that distinction, this behavior becomes far less mysterious and a lot more logical. 2. Binding vs Value " What const Actually Does A const variable is like a signpost planted firmly in the ground. You can't move the signpost or point it somewhere else, but whatever it's pointing at can shift around freely. Primitives behave like solid stones once placed; they don't change shape. Arrays and objects are more like workbenches: the signpost stays fixed, but the tools and pieces on the bench can be rearranged, added, or removed. That's the heart of it. const protects the pointer, not the thing it points to. 3. Mutable vs Immutable Data Types Primitives in JavaScript act like sealed envelopes; you can read what's inside, but you can't change…...
Building Smarter Wearable App with WeatherKit and CalendarKit Integration
just now (296+ words) Context-aware apps are no longer a luxury " they're expected. In this guide, we'll build a HarmonyOS smartwatch app using WeatherKit and CalendarKit to deliver dynamic, smart suggestions based on weather conditions and user schedule. Whether you're building a smart wardrobe, a jogging planner, or a hydration reminder, these kits provide powerful data hooks. Let's get started! 1.Enable the kits in module.json5: 2.Import required kits in your .ets files: Let's create a reusable WeatherService to fetch weather info based on the current location (assumes location permissions granted). Now, let's pull today's events using the CalendarKit API. Let's create a ContextEngine that provides daily advice based on the weather and upcoming events. Finally, let's create a simple ArkUI page that shows: Example screen on the Watch: " 22" " Light Rain " Today's Events: 10:00 " Team Sync 15:00 " Gym " Suggestion: " Rain expected. Take an umbrella before your "10:00 " Team…...
AWS re:Invent 2025 - [NEW LAUNCH] Bring Your Own Agents and Tools to AWS Transform (MAM208)
1+ min ago (606+ words) " AWS re:Invent 2025 - [NEW LAUNCH] Bring Your Own Agents and Tools to AWS Transform (MAM208) Before I dive in, I just want to understand the audience a little bit. How many of you here are what we would call AWS partners? Good. This is going to be useful to both partners and direct customers as well, but especially if you're a partner working with a customer, this might be especially useful for you. but the challenge is maintaining the networking and the security of your on-premises environments and making sure that the network we set up in the cloud is similar to what you have on premises and follows all the same compliances. That's hard. And you want your workload in the cloud to be built to AWS's best practices or cloud best practices. So that's not easy to do. And…...
Record flooding threatens Washington as more heavy rain pounds the Northwest
2+ min ago (283+ words) The Skykomish River roars by a cabin on Wednesday, Dec. 10, 2025, near Index, Snohomish County, Wash. (Nick Wagner /The Seattle Times via AP) Washington Gov. Bob Ferguson declared a statewide emergency Wednesday in response to the intense flooding. "It's time to pay attention," said Gent Welsh, adjutant general of the Washington National Guard. "There are going to be some serious impacts to communities around this state in the next 24 to 48 hours." Flooding rivers could break records this week The Skagit River is expected to crest at roughly 47 feet in the mountain town of Concrete early Thursday, and roughly 41 feet in Mount Vernon early Friday morning. Those are both "record-setting forecasts by several feet," Skagit County officials said. Harrison Rademacher, a meteorologist with the weather service in Seattle, described the atmospheric river soaking the region as "a jet stream of moisture" stretching…...
Palm Beach County delays vote on controversial AI data center near Arden community
5+ min ago (458+ words) PALM BEACH COUNTY, Fla. " A controversial plan to build a massive AI data center near the Arden community is on hold after Palm Beach County Commissioners delayed a key vote Wednesday morning. The decision came after commissioners acknowledged they still had more questions than answers about the proposed project in western Palm Beach County. WPTV was at the meeting as dozens of Arden residents filled the commission chambers, prepared to voice concerns about environmental impact, noise, and changes they fear the project could bring to their community. Commissioners were expected to vote on the next phase of the development but instead postponed the decision to April. They said the delay will allow time for additional studies and a deeper review of the proposal. Resident Janice Ridenour said the community wasn't bothered by the delay. "None of us had a problem…...
Complex II Crucial for Purine Synthesis in AML
6+ min ago (963+ words) In groundbreaking research published in Nature Metabolism, scientists have uncovered a previously unrecognized metabolic vulnerability in acute myeloid leukemia (AML) that centers on the critical role of mitochondrial complex II in purine biosynthesis. This discovery emerges from a comprehensive pathway coessentiality mapping approach, revealing that the inhibition of complex II triggers an accumulation of glutamate [] In groundbreaking research published in Nature Metabolism, scientists have uncovered a previously unrecognized metabolic vulnerability in acute myeloid leukemia (AML) that centers on the critical role of mitochondrial complex II in purine biosynthesis. This discovery emerges from a comprehensive pathway coessentiality mapping approach, revealing that the inhibition of complex II triggers an accumulation of glutamate (Glu) upstream of the enzyme, fundamentally disrupting cellular metabolism and impairing leukemia cell growth and survival. Mitochondrial complex II, also known as succinate dehydrogenase, is well-known for its dual role…...
NocoBase Weekly Updates: Optimization and Bug Fixes
6+ min ago (510+ words) Summarize the weekly product update logs, and the latest releases can be checked on our blog. NocoBase is currently updated with three branches: main , next and develop. [Action: Import records] allow selecting ID for import fields (#8132) by katherinehhh [Workflow] Add "main" data source context for UserSelect, in order to provide a more common component which could be used in other place (#8010) by mytharcher [Action: Import records Pro] Enhanced error messages for asynchronous tasks to provide users with specific reasons for task failures by mytharcher [database] Fix: remove UTC processing in time conversion for time-only fields to prevent timezone-induced shifts. (#7812) by ChimingLiu [Multi-app manager] Log level settings not applied to sub applications (#8045) by 2013xile [Collection field: Many to many (array)] Fixed the issue where the m2m array field in the subtable could not be updated (#7998) by cgyrock [Theme editor] Enable theme switcher on…...
China's Pudu takes robot dogs outdoors to fuel growth
8+ min ago (163+ words) TOKYO -- Pudu Robotics, the Chinese startup best known for its cat-eared restaurant robot BellaBot, is moving outdoors for its next phase of growth, a China's Pudu takes robot dogs outdoors to fuel growth Cat-eared service machine maker rolls out quadruped model for delivery, surveillance TOKYO -- Pudu Robotics, the Chinese startup best known for its cat-eared restaurant robot BellaBot, is moving outdoors for its next phase of growth, a shift its chief executive says marks the company's broader push beyond hospitality into logistics, inspections and public-safety applications. China's humanoid robot makers ramp up production despite tech hurdles Japan robot makers focus on function over form in humanoid machines Renesas, Sumitomo Heavy join Japan team building humanoid robots Japan Inc. learns to become less reliant on China China's Unitree forms joint venture to develop friendlier robots Foxconn to deploy humanoid robots to…...
“The LLM productivity cliff”: New research offering a different lens on AI productivity
8+ min ago (341+ words) The dominant story about large language models is simple: give workers AI, and productivity rises. But workplace evidence is uneven. In software engineering, some teams accelerate while others slow down after adopting AI assistants. In customer support, junior agents sometimes gain more than experienced staff. Wage and opportunity effects also look lumpy, not smooth. Bisardi labels that threshold AI architectural literacy. This is not about prompt cleverness. It is the operational ability to decompose ambiguous goals into tractable tasks, orchestrate multi-step workflows, bind models to tools and data, and validate outputs systematically. In short, it's the difference between using a chat interface and engineering a reliable system. The paper synthesizes emerging evidence into a three-level model of practice. Level 1 is surface usage. LLMs are treated as autocomplete, search, or a writing shortcut. The workflow remains mostly unchanged. Studies in software…...